Brewer's Friend Home Brewing Software

Ingredient Series: Gene-Edited Beer Yeast

Thursday, May 13th, 2021

by Jim Vondracek

Homebrewers use their creativity, building recipes and brewing processes using new or novel ingredients, pushing the boundaries of new flavor profiles. Similarly, those who produce ingredients and products also innovate, using both cutting-edge science and brewing knowledge to create these new ingredients and products for homebrewers.

A few months ago, Omega Yeast released two new strains, Bananza and Sundew, both available now to homebrewers, created using CRISPR gene-editing technology. Conversations with brewers interested in pushing the upper limits of esters and fruitiness in their beers led Omega to the create these new strains. Thank you to Omega staff Bianca Alley (Lab Manager), Keith Lacy (Research and Development Lab Technician) and Laura Burns (Director for Research and Development) for visiting with me about these new yeasts and the high tech process of creating them.

Omega Yeast’s POF- Project

When Laura, who earned a Ph.D from Vanderbilt, joined Omega in 2019 to lead the research and development efforts, she pushed ahead with what Omega calls its POF- Project. POF- stands for Phenolic Off Flavor Negative. Phenolic flavors due to brewing yeast, according to Laura, are the result of the work of the yeast’s FDC1 gene. This gene enables an enzyme which in turn produces a compound called 4-vinyl guaiacol (4VG). Most people perceive the 4VG compound as spice and clove phenolic flavors – in beer and other products, like baked goods.

Historically, through selection by brewers, many brewing yeasts developed naturally over time to be phenolic negative. Exceptions include Belgian and German Weizen yeasts, where the spice and clove phenolics eschewed in other styles are seen as positive attributes. These yeasts also developed strong ester characteristics, to compete with the phenolic flavors. It was these esters that sparked the POF- Project.

According to Bianca, Omega was interested in “eliminating phenol flavors produced by these strains so that the ester characteristics can come through, giving way to a new beer character.” The phenolics, Laura said, “tend to mask some of the hoppy character of the beer” as well as other flavor profiles. “In the absence of the phenols,” she continued, “other characteristics are emphasized and come through in new and interesting ways in the final character of the beer.”

CRISPR Gene Editing

Both Laura and one of Omega’s founders, Lance Shaner, previously worked with CRISPR gene editing, in graduate school, so they were well situated to take on this project. According to Laura, the limitations on using CRISPR are not equipment related – the equipment needed is readily available and affordable. What is needed is the knowledge of how to use it, experience, and the perseverance to go through the robust licensing process required for CRISPR created products.

In sum, CRISPR offers scientists a way to find a specific bit of DNA inside a cell and then alter it. CRISPR has been adapted to do other things too, such as turning genes on or off without altering their sequence. Prior to this technology, editing the genomes of some plants and animals was possible, but the process was both prohibitively expensive and took years. Today, CRISPR makes the process of gene editing affordable and available to small companies like Omega.

Already widely used for scientific research, many of our food stuffs have been altered via CRISPR gene editing. CRISPR is also being used to transform medicine, both in the treatment and prevention of diseases.

GMO Yeast?

In the grocery stores, we see many items labeled as Non-GMO, responding to concerns about the long-term environmental and health impacts of industrial farming of genetically engineered plants and animals. These concerns infuse the active conversations and debate about GMO products in scientific, environmental, regulatory and consumer circles.

According to Laura, Omega’s gene-edited yeasts are not best described as GMO. She said “There are no added materials introduced to the yeast, just taken out. We took a minimalist approach so that it was approachable and brewers wouldn’t be hesitant to use the yeast.”

Ramp Up the Fruitiness: Bananza and Sundew

Omega’s POF- Project grew from conversations with professional and homebrewers about wanting yeast that amplify the fruity characteristics of their beers. “We had an ear to what our customers were looking for,” according to Laura, “and some of these strains were obvious choices to offer.”

The first two yeasts released that were produced using CRISPR technology are Bananza and Sundew. Bananza has prominent banana aromas and flavors, much like a hefeweisen yeast, but more pronounced and tropical, because of the lack of competing clove and spice aromas and flavors in the typical hefe yeast. Sundew features strawberry, tropical fruit and stone fruit esters, again amplified by the lack of phenolic characteristics, which combine interestingly with fruity hops.

Laura, Keith and Bianca all brew – Laura did so professionally at two breweries and Keith and Bianca are active homebrewers. “It was kind of surprising how much a little underpitch of Bananza really enhanced the banana flavors,” according to Keith. This is a common technique for homebrewers with Hefeweizen and Belgian yeast strains, but can be tricky – the fermentation character can go from pleasant to a hot mess quickly. But Bananza works well with a slight under pitch, Keith said, “it didn’t produce any weird off flavor and it didn’t struggle to finish up.”

For Sundew, according to Keith, temperature was more key. Fermenting in the low to mid seventies enhanced the ester quality, while still being pleasant and enjoyable.

Both Bianca and Keith brewed multiple batches with these new yeasts, using Brewer’s Friend to craft the recipes, and each generously shared one of their favorite recipes.

Sundew Stout Recipe by Keith Lacy

Sundew Stout Recipe in Brewer’s Friend

With the berry sensory notes that Sundew Ale (OYL-401) produces, it naturally fits many pale, fruity styles. I wanted to see how the yeast pairs with the flavors of a dark beer (dark chocolate, dried fruit, toffee, coffee, and roasty goodness!) and settled on a stout. By design, this recipe sits in the middle of various stout subclasses and with a few simple adjustments can be tailored to the personal tastes of the brewer. For example, mash with less grain at 148°F for higher attenuation and a drier finish to make a dry Irish stout, or increase the amount of oats to 10-20% to make an oatmeal stout.

The higher mash temperature gives body without being overly sweet, the dehusked and debittered Carafa III adds beautiful roasted color without the astringency, and the flaked oats help with a nice stable head. You may substitute Maris Otter for the Golden Promise. Other possible substitutions include honey malt or a medium crystal malt for the Golden Naked Oats (or whatever you prefer – it is your beer!)

First Gold reflects the more traditional English hop character and also adds some fruity character with a touch of spice. The Ariana hop choice brings a higher alpha acid percentage to the recipe, and also lends some blackcurrant notes. When added to the whirlpool, the hops don’t make the beer overly bitter or overpower the other aromas. For a more traditional English take, I’ve always been a fan of East Kent Golding or Fuggles.

Recipe

STATS:
Original Gravity: 1.058
Final Gravity: 1.016
ABV: 5.48%
IBU: 29
SRM: 38

FERMENTABLES (5 Gallon Batch):
10 lbs: Golden Promise (77%)
1.2 lbs: Chocolate Malt (9.2%)
0.4 lbs: Carafa III (3.1%)
0.7 lbs: Flaked Oats (5.4%)
0.7 lbs: Golden Naked Oats (5.4%)

HOPS:
1 oz: First Gold, Type: Pellet, A.A.: 7.5, Use: Boil for 60 min
1 oz: First Gold, Type: Pellet, A.A.: 7.5, Use: Boil for 5 min
1 oz: Ariana, Type: Pellet, A.A.: 11, Use: Whirlpool

MASH GUIDELINES:
Infusion, Temp: 154°F, Time: 60 min
Boil for 90 minutes

YEAST
OYL-401 Sundew. The temperature range is relatively broad, from 64-78°F. We recommend slight overpitching or a fresh starter for more berry notes. Sundew will shine at fermentation temperatures in the mid-70s.

Even though the boil is 90 minutes, add the first hops at the 60 minute mark. I prefer this method, so that I open a 1 oz packet of hops and dump it into the kettle as opposed to weighing it out or ending up with partial packets lying around.

Sundew Strawberry Puckerade, Fruited Kettle Sour Recipe by Bianca Alley

Sundew Strawberry Puckerade in Brewer’s Friend.

To highlight the robust strawberry jamminess of Sundew™ Ale (OYL-401), I built a recipe that would complement the Belgian and berry characteristics. Balancing the acidity and fruity berriness presents the key challenge to pairing Sundew with a fruited kettle sour

Using a basic malt bill of 50-50 wheat and 2-row, I chose to do a protein rest that helped to break down the beta-glucans and long protein chains adding to the body and making the lautering a little bit easier.

The finished product pushed fruit forward on the nose, with a nicely tart finish. The flavor profile highlighted a melding of strawberry puree and lemon zest to accentuate the aromatic berry yeast characteristic. A sure thirst quenching crowd-pleaser.

Recipe:

STATS:
Original Gravity:1.048
Final Gravity:1.015
Starting pH:5.6
Final pH: 3.18
ABV: 4.3
IBU:4.1
SRM:2.8

MALT (five gallon batch):
7 lbs 2-row
6 lbs White wheat

HOPS:
0.25 oz Tettnang (A.A. 4.3) dry hop after lactic acid production

FLAVORING ADDITIONS:
8 oz Vintners Harvest Strawberry Puree
2 lemon peels steeped in 0.5 liter of 212℉ of hot water

MASH:
Protein Rest: 122℉, 35 minutes
Saccharification: 148℉, 45 minutes
Mash Out: 168℉, 10 minutes

Boil for 20 minutes

SEQUENTIAL FERMENTATION:
Knock out at 95°F and allow the lacto to sour for 24 hours. The wort should be sufficiently sour (pH 3.2-3.4), at which point pitch Sundew and dry hop 0.25 oz Tettnang hops. After 1 week (or once fermentation is complete), add strawberry/lemon flavor and leave for an additional 48 hours for refermentation prior to kegging.

YEAST:
OYL-401 Sundew. The temperature range is relatively broad, from 64-78°F. We recommend a slight overpitch or a fresh starter for more berry notes. Sundew will shine at fermentation temperatures in the mid-70s.

LACTIC ACID BACTERIA:
OYL-605 Lacto. Blend of Lactobacillus plantarum and brevis. Sours across a broad temperature range.

Posted in Ingredients, Uncategorized | No Comments »

Beer Styles Series: Maibock or Helles Bock

Monday, April 5th, 2021

by Jim Vondracek

Today, we’re taking a deep dive into a seasonal style – the traditional Maibock, now called the Helles Bock in the latest BJCP style guidelines. Seasonal brewing with beers like the Helles Bock can be great fun, as homebrewers establish their own traditions or follow historical patterns that may be hundreds of years old.

History

The Helles Bock fits into a traditional calendar of German bock brewing – the traditional or Dunkel Bock brewed for the winter, the Doppelbock for Lent (to provide sustenance during fasting) or early spring, and the Helles Bock for May and the lead into summer.  It fits neatly into a season that is post-doppelbock but pre-autumn festbiers. 

The history of the Helles Bock is also tied into the broad movement of German brewing from darker to lighter beers, with the advent and growing popularity of pale malts in the early 19th century.  

Before then, German beers, including bocks, were brown or dark.  First developed in England, pale malting came about when kilning by burning wood was replaced with coke.  The Germans were not quick to embrace the new pale malts – the locals loved their brown beers, including bocks.  Using the new pale malts, brewers in Pilsen, Bohemia, developed the pale style that eventually came to rule the world – the Pilsner.  Eventually, its popularity led German brewers to adapt, leading to the development of many pale styles we now equate with German lagers – Helles, Festbiers, German Pilsners, Dortmunders and the Helles Bock.  

Perhaps not coincidentally, at the same time pale beer arose, the popularity of clear glassware for drinking grew, replacing the ubiquitous pottery, ceramic, metal or wooden drinking tankards.  Now those pretty pale beers could be shown off!

For the Helles Bock in particular, it is anecdotally accepted that the style began at Munich’s Hofbrau, starting in the 1600s. At that time, the royal household were not entirely pleased with the offerings from Hofbrau and desired beers brewed in the style being popularized in Einbeck – Bocks. Later, with the advent of the pale malts, Hofbrau made their bock more pale and hoppier, leading to what we now think of as the Maibock or Helles Bock.

Style Characteristics

Today, the Helles Bock is a beer of some strength, generally pale ranging from golden to a light amber.  As a style, it can be thought of as sitting between the Dunkels Bock and the Munich Helles or Festbier.  It is a big, strong malty lager like the Dunkels Bock, but paler and with less rich malt character and more balanced, by bitterness and dryness.  Compared to the Helles or Festbiers, it is maltier and stronger.  

Maltiness is moderate to strong in this style, both in aroma and flavor.  It can have some Maillard-type character, but shouldn’t be caramelly or have any dark fruit character, unlike the Dunkels Bock. While still malt-forward, it gives the perception of more balance than the traditional bock because of its well-attenuated nature and elevated bitterness.  

Like most lagers, it has a ‘clean’ fermentation character, without perceivable esters or phenolics. Some fruitiness from Munich malt is sometimes present in this style, but that isn’t from fermentation, whose character should be clean. 

In addition to a clean fermentation, this style depends upon a fuller attenuated fermentation than the traditional bock.  This should not be a sweet beer, but have a mostly dry finish.

Mouthfeel is important for the style.  It needs a medium body to impart a sense of fullness that is a part of our enjoyment of bocks.  It also needs to have solid carbonation, up to medium high carbonation – this carbonation couples with the attenuation and bitterness to make this a more ‘drinkable’ version of the bock.  A light alcohol warming also enhances our enjoyment of this style – but it should never be hot or fusel. 

The Numbers

• According to the BJCP style guidelines, the Helles Bock comes in at:
• Bitterness 25-35 IBUs
• Color 6-11 SRM
• Original Gravity 1.064 – 1.072
• Final Gravity 1.011 – 1.018
• ABV 6.3% – 7.4%

Brewing the Helles Bock

As with all German lagers, any discussion of the Helles Bock soon becomes a conversation about whether to decoct or not.  The bottom-line is that people make an excellent Helles Bock both ways.  One way to approach it is as an interesting experiment – perhaps do a simple version of a decoction, a single decoction, and see how challenging you find it for your brewing process and set up. Or if you’re already an experienced decoction brewer, do a three or four decoction mash and see how much complexity you can pull out of the simple grain bill. 

Without a decoction mash, some brewers use melanoidin malt to mimic the flavors produced by decoction.  If you do this, show restraint, too much melanoidin can make the beer sweet and too dark for this style – Brewer’s Friend can help you track the color and the percentage, which should be no more than 5% of the grain bill.

Otherwise, specialty grains are generally not used in the Helles Bock.  Brewers adjust the percentages of three base grains, typically – Pilsner, Munich and Vienna – to get the flavor, aroma and color profile they are looking for. 

While still malt forward, the Helles Bock does need a firmer bitterness than the traditional bock.  Hops are usually German noble hops, often Hallertau Mittelfruh, although you can certainly use hops from other areas whose parentage traces from the noble hop category – like American-grown Liberty, Mt. Hood or Sterling.   

As with all lagers, yeast and fermentation are critical to the Helles Bock.  Choose a clean, well-attenuating and flocculating yeast that will enhance malt character.  White Labs Bock Lager and Southern German Lager strains are good choices.  Omega’s Bock Lager and Wyeast’s Munich Lager and Hella Bock strains are also excellent choices.  Dry yeast options are also available – Lallemande’s Lalbrew Diamond and Fermentis’ Saflager W-34/70.  

Pitching sufficient amounts of healthy yeast is important to producing clean, well-attenuated lagers.  Generally, pitch rates for lagers are higher than for ales, and because the Helles Bock is a bigger beer, it needs an even higher pitch rate.  Use the pitching calculator at Brewer’s Friend to make sure you’re pitching enough yeast.

You can pitch multiple packs of yeast, but that can get expensive fast.  You can also make a starter, for a beer like the Helles Bock, it will need to be a big starter and probably will need to be stepped up twice.  For beers like this, I will sometimes do a three-gallon extract batch with no hops, pitch two packs of lager yeast, let it ferment out for ten to twelve days at 50F, then pour off the ‘beer’ and pitch the remaining yeast cake into the lager.  For me, this is often easier than a multiple step starter that ends up still not being big enough. 

Generally, lagers require fermentation temperature control.  Standard practice is to ferment at 50F.  My practice is to chill wort to below 50F, pitch the yeast, let it rise to 50F and then ferment there for ten to twelve days, finally raising the temp to 65F.  This can serve as a diacetyl rest, although I find that if I pitch sufficient amounts of healthy yeast at the right temps, diacetyl is usually not a problem.  But raising the temp does encourage the yeast to finish up their job and get the final bit of attenuation 

After fermentation, I drop the temperature to 34F and lager it for at least two weeks.  I carb at that temperature, too, and storing it in a cold keg in a fridge or keezer is also like lagering, so often the beer will have lagered for about a month before getting served.  

Helles Bock Recipe

View the recipe in Brewer’s Friend here.

• OG 1.069
• Bitterness 31 IBU
• Color 7 SRM
• Final Gravity 1.014

Grain Bill

8 lbs Pilsner
5 lbs Vienna
3 lbs Munich

Mash

Double Decoction, steps at 142F, 152F and 158F
Batch Sparge
Water – Chicago municipal water (Lake Michigan), target mash pH 5.3, with 13 ml of lactic acid

Hop Schedule

2 oz Hallertau Mittelfruh 3.7AA @ 60 minutes
1 oz Hallertau Mittelfruh @ 30 minutes
1 oz Hallertau Mittelfruh @10 minutes

Yeast

Omega Bock Lager or other yeasts mentioned above

Other

Whirlfloc added with ten minutes left in the boil, White Labs Clarity Ferm pitched with the yeast

Commercial Helles Bocks – On Tour’s Low Boy

As a style, the Helles Bock hasn’t been as commercially popular here among craft beer brewers, compared to the traditional Dunkels Bock or even the Doppelbock.  The most popular commercial Maibock in this country isn’t a lager – its Rogue’s Dead Guy, which Rogue describes as a Maibock Ale.  Compared to its German counterparts, Dead Guy has more toffee and caramel aromas and flavors.  That being said, its both popular and award-winning.

One of my favorite German Maibocks is from Ayinger.  I’ve never had it fresh, from the source, but the imported bottles I’ve had have been delicious.  

I’m also fortunate to live near a brewery here in Chicago that won a Gold Medal at the Great American Beer Festival for their Maibock – On Tour’s Low Boy.  Like the best examples, it has a high drinkability factor, because of its balance, carbonation, smoothness – you don’t realize you’re drinking a beer that is quite as big as it is.

A group of us spoke with Dave Campbell, brewer at On Tour, at a Helles Bock tasting featuring Low Boy. Some highlights from that conversation include:

• Grain Bill – in addition to Pilsner and Munich, On Tour uses rye malt in Low Boy, along with melanoidin, cara-amber, and a touch of caramel malt

• Water – On Tour uses Lake Michigan water, and does small adjustments with calcium chloride, calcium sulfite, and phosphoric acid

• Hops – Columbus for bittering and Czech Saaz at the end, in the last ten minutes

• Yeast – BSI Andechs strain, originally from a monastery brewery outside Munich, 72% attenuation and strong flocculation

• Fermentation – starts at 53F, let rise to 55F over the first couple of days, halfway through fermentation raise it to 60, then slowly drop to lagering temps; four weeks total for fermentation and lagering

According to Campbell, On Tour brews Low Boy seasonally, in late winter, to be served in the spring.  It’s a beer they are known for, because of the medal, but he called it a “taproom hero”, meaning that people come to the taproom for a ten ounce pour, but then switch to drinking  their popular and more crushable IPAs and other offerings.  

Whether drinking a commercial offering like Low Boy or your own handcrafted Helles Bock, enjoy this sure sign of spring as we leave the doldrums of winter.  Prost!

Posted in Beer Styles | 1 Comment »

Rebooting

Saturday, April 3rd, 2021

by Jim Vondracek

This spring, the Brewer’s Friend blog is rebooting, to augment the resources and tools the site offers homebrewers. 

We will be posting new content for brewers weekly.  Initially, our content will focus on six areas:

• Styles – an indepth look at a particular style, including one or two recipes
• Ingredients – a look at hops, malts, yeast, and water
• Beginning brewing advice, tips and equipment
• Advanced brewing advice, tips and equipment
• Interviews with brewers and experts
• Brewing as a hobby – homebrew clubs, events, competitions, stories

Check back soon for an article on a seasonal style – the Helles Bock or Maibock, traditionally drunk in May, fitting in the old German brewing calendar between the Doppelbocks of early spring and the Fest beers of autumn. 

I serve as editor and writer for the blog.  From Chicago, I brew with the CHAOS homebrew club, am a BJCP National and Cider judge, an assistant representative for the BJCP in its midwest region, have taught about homebrewing at the City Colleges of Chicago and regularly lead tastings, off-flavor, pairings and other brewing-related workshops.  I enter competitions and, like most brewers, sometimes earn a medal and sometimes don’t.  I love the community of homebrewers, it is a great hobby!  

If you have ideas for articles, or any feedback, please contact me at editor@brewersfriend.com  Would love to hear from you as the blog develops over the coming months.  

Posted in Uncategorized | No Comments »

A Discussion With John Compton – Highway Manor Brewing

Tuesday, September 29th, 2020

By Udit Minocha

Do you remember how you got into homebrewing? John Compton III of Highway Manor Brewing, in Camp Hill, PA, remembers it all. One of his favorite beers was Franziskaner Dunkelweizen.

How John Got Started in Brewing

John started brewing in 2001. His parents, who were quite religious, were were not crazy about the idea. Since it kept him out of trouble, they felt it was worthwhile. The book that got him into brewing was “Brew Classic European Beers at Home.” He didn’t even get to try his first batch after those patient weeks of waiting because the dog got into it first. His woodworking career never took off, and John ended up devoting most of his free time to brewing.

Shortly after finding what commercial beer styles he liked as a drinker, he attempted to replicate them and their flavor profiles in his recipes. He used yeast dregs from Belgian beers. He felt it was key to understand everything about the ingredients and yeast.

In 2006 at Monk’s Café and Memphis Taproom in Philadelphia, PA, he had his first wild Belgian beer. At that time sour beers were a weird oddity and not widely available. Replicating Belgian sours was more difficult. He started doing more research on the wild yeast that predominated the area around the Abbeys. John asked himself how to get that yeast?

Replicating the Masters Before Him

First, he tried to capture the wild yeast that lived around his home. He set out one gallon jugs containing wort. Most were terrible and experience became wonderful teacher – if they smelled like dirty feet or blue cheese – he dumped them before trying them. A few attempts seemed promising.

In 2010 -2011 he met Terry Holbacher of Pizza Boy Brewing Company and Vinnie Cilurzo of Russian River Brewing Company where he was introduced to more sour beers. John brewed a lot more sours and started entering homebrew competitions. Although sour beers were not yet main stream, they were in his future. He put together a plan; make about 3-5 great sour beers, make them stand out, and barrel-age them.

Going Pro

That is how Highway Manor Brewing got started in September 2015. But that is only the beginning. In the initial stages, it took five brews a day to fill one wood barrel. Fermenting and aging took about a year or more. There are as many as four different wild yeasts fermenting the sour beer at once.

The recipe formulation, legal paperwork, ordering supplies, and fixing things were was taxing as the 5-batch a day brew days. Tackling the consistency factor on wild brews was just icing on the cake. That is how wild fermentations are – sometimes they go from wild to crazy!!

John had to make more time for himself. He moved a bed into the brewery to save on travel time. Any startup brewer will tell you that there is more than just making beer.  You have to sell it. That is a tale for a different day but in short, it takes a lot of time and effort.

So far the sour beers are available in Philadelphia, New York City, Rochester, New York, Florida, and Maryland while Vermont and New Jersey distribution is in the works.

Posted in Brewing, Fun | No Comments »

Priming Sugar 101: How To, How Much, and When To Use?

Thursday, September 24th, 2020

by Chris Cook

Congratulations. You nailed your brew day, you’ve made it through what probably felt like several long weeks of fermentation, and your precious wort is now precious beer. Now just one step remains between you and a cold, bubbly glass of homebrew: Priming.

What is Priming?

Without priming, the beer a homebrewer has invested so much time, energy and money into will pour flat and lifeless. Proper priming gives beer its trademark carbonation and foamy head and can significantly benefit aroma, taste, mouthfeel and overall appearance. Priming is essentially the home stretch of the marathon that is homebrewing, but luckily it’s a simple process that’s made even easier by the wealth of equipment and resources available to homebrewers today.

Newcomers to homebrewing likely prime their beer directly in the bottle. This process, known as bottle priming, involves mixing dissolved sugar with beer, transferring it to bottles, and securing those bottles with an air-tight seal. Yeast leftover in the beer from fermentation eats away at that added sugar in the bottle and produces carbon dioxide gas, which remains in the beer until it’s ready to pour. It’s the same process that produces the air bubbles in an airlock during fermentation. The difference is that during bottle priming, homebrewers want to trap that CO2 gas in the bottles to create carbonation.

There are several “must-have” pieces of equipment a homebrewer needs to bottle prime, including a bottling bucket with a spigot, food-grade tubing, a siphon or racking cane, and a bottling wand (spring-loaded is best). However, the most important aspect of the process is sugar. 

How much sugar, what type, and how it’s added to the beer can all impact the final product that comes out of the bottle. Fortunately, the Brewer’s Friend Beer Priming Calculator makes it easy for homebrewers both novice and veteran to dial in the priming of any brew. Simply enter the volume of beer to be bottled, the desired volumes of CO2 (more on that shortly) and the temperature of the beer being bottled. The calculator will then give an exact measurement of how much priming sugar to use.

However, before getting started, there are a few things every homebrewer should be mindful of when it comes to bottle priming. First, there is a very real danger of creating infamous “bottle bombs.” These are exactly what they sound like – bottles of beer turned into explosives by excess pressure produced from the priming process. Remember that the point of bottle-priming is to trap CO2 gas inside the bottle. However, a standard beer bottle has a limit on how much pressure it can contain before it explodes, which is why it is of utmost importance to use the proper amount of priming sugar AND use proper sanitation practices to avoid introducing unpredictable bacteria and wild yeast to the beer. You also want to ensure that the fermentation is actually complete and not just stalled.

As scary as bottle bombs may sound, they can be easily avoided by adhering to several familiar principles all homebrewers should follow: proper sanitation, careful handling of the beer, and attention to detail. 

How Much Priming Sugar Do I Need?

With bottle priming, the first choice a homebrewer encounters is how carbonated he or she wants their beer to be. That carbonation is measured in “volumes of CO2,” which vary by style and taste. Most beers will fall between 2.0-3.0 volumes, which conveniently is the amount most standard beer bottles can hold. For reference, the Brewer’s Friend Beer Priming Calculator lists a number of beer styles and their appropriate ranges of carbonation.

The next decision regards what type of sugar to use to prime the beer. Different sugars will impact the final product in various ways, from the negligible impression of common table sugar to other options such as dried malt extract (DME), honey and candy syrup, which leave trace characteristics and take longer to carbonate. Table sugar and corn sugar are the most common products used because of their neutrality, availability, simplicity to handle, and the quickness in which they finish up. Beginners should stick to one of those until they have nailed their bottle-priming process, though the Brewer’s Friend Beer Priming Calculator will be ready and waiting with calculations for each type of priming sugar when homebrewers decide to experiment. 

The last variable is how a homebrewer introduces priming sugar to the beer. The tried-and-true method is to dissolve the chosen sugar in boiling water, cool it down to approximately 80 degrees, and pour it into the bottling bucket. From there, the beer is carefully transferred from the fermenter to the bottling bucket where it mixes with the sugar solution. Splashing can lead to dreaded oxidation, so take care to transfer slowly (auto-siphons help tremendously).

Once the beer and priming sugar have been mixed in the bottling bucket, the beer is ready to be bottled, capped, and stored. Most table sugar-primed beers take 2-3 weeks to fully carbonate if stored between 65-70 degrees. However, it’s always a good idea to test the carbonation by refrigerating and testing one bottle at two weeks, another at three weeks and so on, until the carbonation levels off. 

Note that while bottle priming is a process most common for beginners (compared to kegging), it is by no means unique to newcomers to the hobby. Many lifelong homebrewers, and many breweries at that, still bottle prime and bottle condition their beer because of the unique characteristics it can, and how much easier and cost-effective it is compared to kegging. Any homebrewer that can properly bottle prime his or her brews will never be in short supply of consumables for themselves and their fellow beer-lovers.

Posted in Brewing, Brewing Software, Ingredients | No Comments »

10 Beginner-Friendly Beer Recipes

Friday, August 28th, 2020

By Troy Stouffer

When I tasted my first homebrewed beer, I was proud of my creation and it sparked a desire within me to brew more and to create my own recipe. I dove headfirst into websites, forums, and podcasts to learn as much as I possibly could so I could design my own unique beer. What I found was that there is so much information out there that I easily got overwhelmed and didn’t know where to start the process. My hope and my goal are to break down some of the confusion so we can all heed Charlie Papazian’s advice of, “Relax. Don’t worry. And have a homebrew.”

What Goes Into a Beer Recipe

Beer is essentially just water, barley, hops, and yeast.  Basically, malted barley is crushed and then soaked or mashed in 145F-158F(63C-70C) water for about an hour to extract the sugars out of the grain.  The sugar-rich liquid, or wort, is then drained off to boil for an hour. Hops are added during different parts of the boil to add bitterness, flavor, and aroma. After the boil, the wort is chilled down and transferred over to a fermenter where we add our yeast to begin the magical process of fermentation.

Just as many home brewers started, my journey started with a malt extract kit on the kitchen stove.  Extract brewing takes out much of the work of the brewing process by removing the mashing step.  Malt extract is exactly what it is called.  Maltsters take the sweet wort after the mash and condense it down to a syrup, in some case a powder, so we can just add it to the boiling water and pick up the process after that point. 

Following These Beginner Beer Recipes

Many beginner brewing kits use malt extract due to the ease of brewing and lack of extra equipment needed.  Essentially, you need a pot capable of holding at least 4 -5 gallons of liquid and a food-grade bucket in which to ferment.  There are many techniques and processes to brew beer, but I have included these extract recipes using as little extra equipment as absolutely necessary.  To keep it simple, just bring 3 gallons of water to boil in your pot, add your malt extract, add your hops at the designated times and boil for 60 minutes.  After 60 minutes, cool down your wort to yeast pitching temperature, an ice bath in the sink or tub works great. Now transfer your cooled wort to your fermenter and add some pre-boiled water to the fermenter to bring the volume up to 5.5 gallons.

For recipes with Steeping Grains, place the crushed grains in a muslin bag and raise the temperature of the water to between 150-160 degrees F. Add the grains and kill the heat. Let the grains steep for 20 minutes. Remove the grains then continue heating the wort to a boil. The hop additions listed in relation to how long they should be in your boiling wort (ie. 60 minute hops should be boiled for 60 minutes and 5 minute hops won’t be added until it’s been boiling for 55 of the 60 minutes).

Dry Malt Versus Liquid Malt Extracts

The extract recipes listed below use liquid malt extract. If you want yo use dry instead of liquid, the ratios aren’t pound for pound. Want to use dry malt extract instead? Use the calculator here on Brewer’s Friend

Easy Extract Blonde Ale

Fermentables
6.6 lbs Pilsen Liquid Malt Extract

Hops
1 oz Amarillo – 30 minute boil addition

Other Additions
1 Whirlfloc Tablet – 15 minute boil addition

Yeast
Safale S-04

Easy Extract Amber Ale

Fermentables
6.6 lbs – Amber Liquid Malt Extract
1 lb – Caramel Malt 40L (Steeping Grain)

Hops
1 oz – Williamette – 60-minute boil addition
1 oz – Williamette – whirlpool addition

Other Additions
1 Whirlfloc Tablet – 15 minute boil addition

Yeast
White Labs WLP060

Easy Extract IPA

Fermentables
6.6 lbs – Light Liquid Malt Extract
1 lb – Light Dry Malt Extract
1 lb – Caramel Malt 20L (Steeping Grain)

Hops
1oz – Citra – 60 minute boil addition
1oz – Amarillo – 10 minute boil addition
1oz – Cascade – whirlpool addition

Other Additions
1 Whirlfloc Tablet – 15 minute boil addition

Yeast
Safale US-05

Easy Extract Stout

Fermentables
6.6 lbs – Dark Liquid Malt Extract
0.5 lb – Roasted Barley Malt (Steepling Grain)
0.5 lb – Black Patent Malt (Steeping Grain)

Hops
1oz – East Kent Goldings – 60 minute boil addition
1oz – East Kent Goldings – 10 minute boil addition

Other Additions
1 Whirlfloc Tablet – 15 minute boil addition

Yeast
WYeast 1084

Easy Extract Irish Red Ale

Fermentables
6.6 lbs – Amber Liquid Malt Extract
0.25 lb – Roasted Barley Malt (Steepling Grain)
0.75 lb – Crytsal 40 Malt (Steeping Grain)

Hops
1oz – East Kent Goldings – 60 minute boil addition

Other Additions
1 Whirlfloc Tablet – 15 minute boil addition

Yeast
Safale S-04

Moving To All Grain Brewing

As I stated earlier, All Grain brewing adds the step of mashing your grains to the brewing process. Many brewers convert an insulated beverage cooler to mash their grains. This process requires a false bottom and a valve to drain the wort into the boil kettle. To streamline the process and use just your boil kettle, I recommend getting a grain bag big enough to fit your boil kettle. There are several suppliers and some allow you to customize the size of the bag to fit your specific kettle. The mash temperature range is from 145F-158F(63C-70C). If you mash at the lower end of the range then you will extract more fermentable sugars and your finished beer will be drier. Conversely, if you mash at the upper end of the range, you will create a sweeter finished beer. The rest of the brewing steps are exactly the same as we discussed earlier.

Easy All Grain Blonde Ale

Fermentables
8 lbs – Pale Malt
1 lb – Crystal 20 Malt

Hops
1 oz Amarillo – 30 minute boil addition

Other Additions
1 Whirlfloc Tablet – 15 minute boil addition

Yeast
Safale S-04

Easy All Grain Amber Ale

Fermentables
8 lbs – Pale Malt
2 lbs – Munich malt
1 lb – Crystal 60 Malt

Hops
1 oz – Williamette – 60-minute boil addition
1 oz – Williamette – whirlpool addition

Other Additions
1 Whirlfloc Tablet – 15 minute boil addition

Yeast
White Labs WLP060

Easy All Grain IPA

Fermentables
8 lbs – Pale Malt
1 lb – Caramel Malt 20L

Hops
1oz – Citra – 60 minute boil addition
1oz – Amarillo – 10 minute boil addition
1oz – Cascade – whirlpool addition

Other Additions
1 Whirlfloc Tablet – 15 minute boil addition

Yeast
Safale US-05

Easy All Grain Stout

Fermentables
10 lbs – Maris Otter Malt
0.5 lb – Roasted Barley Malt (Steepling Grain)
0.5 lb – Black Patent Malt (Steeping Grain)

Hops
1oz – East Kent Goldings – 60 minute boil addition
1oz – East Kent Goldings – 10 minute boil addition

Other Additions
1 Whirlfloc Tablet – 15 minute boil addition

Yeast
WYeast 1084

Easy All Grain Irish Red Ale

Fermentables
8 lbs – Maris Otter Malt
0.25 lb – Roasted Barley Malt (Steepling Grain)
0.75 lb – Crytsal 40 Malt (Steeping Grain)

Hops
1oz – East Kent Goldings – 60 minute boil addition

Other Additions
1 Whirlfloc Tablet – 15 minute boil addition

Yeast
Safale S-04

These recipes are fairly simple and designed to be as easy as possible to make with the least amount of equipment. It is important to remember that this is a fun obsession and you can make it is easy or as complex as you desire, but the important thing to remember is that we get beer in the end.

Posted in Recipes | No Comments »

Gose Beer – History, Style, And Recipes

Thursday, June 18th, 2020

By: Ricardo J. Corbella – Brewmaster – Certified Beer Server Cicerone

Editor’s Note: This article was translated from Spanish. Every attempt was made to ensure proper meaning and grammar is true to the source.

Gose-style beer was first brewed more than a thousand years ago in a small town called Goslar in northern central Germany. That beer was probably significantly different from the Gose beer we drink today.

Gose, in German is pronounced “GO-zuh”, the name derives from the river that flows through Goslar, called Gose.  As with most classic beer styles, it’s hard to know exactly when it originated, or what it looked and smelled like. This may be especially true for Gose, as it has a history that extends well in the past long before most beer styles.

The original Goslar beer, according to many sources, was fermented spontaneously or naturally, a culture that had established its residence in the wooden containers used to make and ferment beer. Overall, the process of elaboration before the 1400s was very different from today. The bubbling and boiling were usually not even part of the process. In some cases the brewers did not boil the must at all, and in others, they boiled the must, but not for long.

It could be assumed that Gose was initially prepared with grain or some kind of spice mixture and not with hops. It can also be concluded that these early Goslar beers would have been fermented by multiple types of organisms, probably several strains of Saccharomyces cerevisiae, as well as lactic acid bacteria, Brettanomyces, other wild yeasts and probably a little acetic acid bacteria if the beer was left to age.

Features of Gose Beer

It is a highly carbonated wheat beer, acidic, and fruity, with a restricted character of salt and coriander with low bitterness. They are very refreshing and feature vivid flavors and typically have high attenuation.

Many things play a role in the formation of the final taste of a beer. Specific processes, time, cleaning, equipment design, brewer skill, and ingredients can all drastically change the results. But none can be more important than good ingredients, particularly the water and yeast to be used.

Gose Ingredient Selection

Water: It is known from many sources that water from the Gose River was used to brew beers in Goslar. In the case of Gose beer, the mineral content of the water, especially its salinity, is a good part of what this beer is all about.

Malt: Most Gose brewers adhere to tradition, using a grain bill that consists of wheat and barley in equal proportions with wheat occasionally taking a slight advantage. The malt for Gose beer should be pale two row, pilsner malt, or other well modified pale barley.

Hops: Herbs provided the scent in the earliest Gose renditions. Over time these spices stopped being used and only hops and coriander remain. Its remarkable low bitterness is one of the things that defines its style, so hops are used in small quantities. Another reason is that Lactobacillus is not a hop-tolerant bacterium, only 5 IBUs can affect the growth of some lactobacillus bacteria, and without lactobacillus, the Gose would not be a sour beer. Hop additions would have been enough to prevent unwanted bacteria but low enough to allow lactobacillus to do its job. Traditionally hops would be a noble German variety, a clean hops of flavor, soft with low cohumulone content to impart a milder bitterness. Classic German varieties such as Hellertauer Mittelfruh, Saphir, Hersbrucker or Perle might be good options.

Yeast: A yeast with a relatively neutral flavor profile will allow the acidity of the beer to shine. Attenuation can be important in this style. A highly attenuated yeast will leave the beer dry and crispy, while a yeast with low attenuation will leave a beer with more sweetness. Alcohol tolerance is not a problem for Gose as it is a beer with a low to medium-low alcoholic content, and the same goes for flocculation, as it is not a clear beer.

Spontaneous fermentation: Gose beers were most likely fermented spontaneously. These beers began fermentation in 12 to 24 hours so there should be an immediate source of microganies to get the beer fermenting quickly.  It has been suggested that wooden vessels, sometimes spruce, were a source of bacteria and yeast needed for fermentation. These containers may have acted as a home for resident microorganisms, brewers may have intentionally prevented deep washing of these, as they could have noticed that a more informal cleaning resulted in the next fermentation starting faster.

Fruits: Traditionally, fruit was not added to Gose, but as with Berliner weisse, flavored syrups were sometimes added to beer when served. Contemporary craft brewers have taken this concept and continue to add fruits, both natural and in syrup-form. The addition of fruits on the hot side has the obvious advantage in that they are sterilized by contact with the hot wort. The disadvantage is the loss of some subtle and more delicate flavors and aromas during boiling. Many fruits have seeds and if they are not removed before heating, they can be the cause of harsh and bitter flavors in beer. The fruit added on the warm side can also release pectin which will cause turbidity problems after fermentation. The addition of the fruit on the cold side can give the beer the closest flavors to the real fresh fruit. Like spices, the downside is that it has not been sterilized. Fresh fruit has a lot more bacteria than spices. To alleviate this problem many brewers use frozen fruit, as most bacteria cannot survive for long in freezing, but some bacteria can. Purees of pasteurized fruits are safer, which have then been frozen. The closer to the beginning of fermentation the fruit is added, the more flavor and aroma it loses from the decomposition it suffers during fermentation, the production and elimination of carbon dioxide, in particular, may be responsible for the loss of many aromatic compounds.

Salt: Legend has it that Gose’s salinity once came from the mineral-laden water of the Gose River. And unlike other regions of the world, salt was plentiful in the mountainous region of Harz around Goslar, therefore, salt was not a very expensive product.

Here’s the recipe of one of the great personalities of the brewing world:

Strong English Gose Recipe

“Gordon Strong,” BJCP Director USA
Original gravity: 1.042 (10.5oP)
Final gravity: 1,008 (2.1oF)
Bitternes: 9 IBU
Alcohol: 4.5% by volume
Apparent attenuation: 80%

Grain Bill

5.0 lb. (2.3 kg) German wheat malt
3.5 lb. (1.6 kg) Belgian Pilsner malt

Hops

0.7 oz. (20 g) Czech Saaz, 3% AA – first wort hop

Water

Reverse osmosis (RO) wáter 0.25 tsp. 10% phosphoric acid per 5 gallons (19 L) or until ph at room temperature.
1 tsp. (5 g) calcium chloride (CaCL2) to the mash

Yeast

Wyeast 1007 (German Ale) or White Labs WLP029 (German Ale/Kolsch) yeast.

*Two days before the day of preparation, make 1 qt. (1 L) yeast with the German strain ale, aerating the must thoroughly (preferably with oxygen) before releasing the yeast.

Additional Ingredients

0.26 az. (7.5 g) coriander seed, freshly ground 0 minutes.
0.35 oz. (10 g) kosher salt 0 minutes.

Souring Agent

19 capsules Swanson’s Probiotic Lactobacillus platarum Inner Bowel Support (10B cells/capsule)

Brewing Notes

Mash Target mash temp: 149o F (65oC)
Boil 10 min.

On the day of brewing, crush the malts to 149oF (65oC) into 13 gallon frames. (12 L) of water and keep this temperature for 60 minutes. Raise the temperature by infusion or direct heating to 168oF (76oC) for maceration. Recirculate for 20 minutes, spray with 168o F (76oC) of water until 6.5 gallons (25 L) of wort is collected. Lift the must until boiling and hold for 10 minutes. Do not add hops at this time. After boiling, I cooled to 95 degrees F (35 C). add the powder of 19 capsules of Swanson’s Probiotic L. Plantarum Inner Bowel Support (10B cells/capsule). Do not throw out the German ale yeast at this time. Purge the kettle with CO2 and cover. Hold for 12 or 24 hours at 95oF (35oC), or until the ph drops to 3.4. Add hops, boil the must for 90 minutes. Turn off the heat, then add the coriander into a mesh bag and salt. Steep for 5 minutes, then remove the bag. I cooled to 18oC placed the yeast initiator and fermented until complete. Once the fermentation is finished, ripen for a few days in cold, pass the beer to the barrel and force the carbonate to 3 volumes of CO 2.

Los Santos Hops – Gose Divino Recipe

Brewmasters: Ricardo Corbella, Juan Manuel Castagnini and Nicolas Piana.

Original gravity: 1,039 (10.5oP)
Final gravity: 1,008 (2.1oF)
Bitterness: 6 IBU
Alcohol: 4.2% by volume
Apparent attenuation: 80%

Grain Bill

12.12 lbs (5.5 kg) Malted Wheat
8.8 lbs (4 kg) Malta Pilsner

Hops

0.7 oz. (80 g) Czech Saaz, 3% AA first wort hop

Yeast

Yeast US-05, as it leaves us a neutral profile and works quite well despite the low ph of the must in fermentation.

Additional Ingredients

(0.8 g /L) fresh coriander and crushed 10 minutes before finishing the boil.
(10 g /L) himalayan salt 10 minutes before the boiling is over.
(3.5 L) pink grapefruit juice.
(8 kg) frozen pink grapefruit pulp.

Souring Agent

To acidify the wort we use 2 liters of liquid neutral yogurt containing L. acidophilus and possibly other strains of Lactobacillus.

BREWING NOTES

Mash at a temperature of 149oF (65oC) for 60 minutes.

We boiled for 10 min.

Prepare the pure and maintain this temperature for 60 minutes. Raise the temperature by mixing the infusion or heating to 76oC to finish mashing. Recirculate for 20 minutes, spray with water at 76oC of water until 58 or 60 L of wort is collected to bring to the boil. Heat the must until boiling for 10 minutes. Don’t add jumps at this time. After boiling, I cooled to 95 degrees F (35 C). At this time, add 2 liters of natural whole yogurt. Do not add US-05 yeast at this time. Purge the kettle with CO 2 and cover the pot. Hold for 12 or 24 hours at 95o F (35oC or 40oC), or until the ph drops to 3.4. Add hops in first wort, boil the must for 90 minutes. In the last 10 minutes of boiling add the cilantro and salt. Then transfer to fermenter cooling to 18oC, add the yeast and ferment until it is complete. Add the pink grapefruit juice and frozen fruit pulp. Allow to mature for a couple more days, transfer to a keg, force the carbonate to 3.2 volumes of CO 2.

Sources: Gose: Brewing a Classic German Beer for the Modern Era.
Fal Allen. September 7, 2018. Brewers Publications

Posted in Beer Styles, Brewing | 1 Comment »

Fermentation Temperature Controllers

Thursday, May 14th, 2020

Article and Photos By Mike Dalecki  

Most experienced brewers will tell you that their beer took a major leap forward when they began to do Fermentation Temperature Control (FTC). This article shows the range of methods to control fermentation temperature, from the simple and inexpensive to the complicated and pricey. At the end of the article, I’ll point out a way you might avoid worrying about temperature control altogether. Most of the discussion here presumes ale brewing, but lagers have similar issues–there are optimal temperatures at which they should be fermented, and your ability to control those temps will reward you.

Why Temperature Control is Important

Different yeasts have different ideal temperature ranges. Yeast fermenting too warm will express unintended flavors, many of which are undesirable. Estery/banana flavors, an alcoholic flavor–these are to be avoided in normal beers and you can do that by preventing the fermentation temperature from becoming too warm.

There are a couple of exceptions; farmhouse or Saison beers use yeast designed to ferment at higher temperatures in order to express certain flavors; if all you brew are these beers, FTC may not matter to you. Kveik yeasts (covered below) can handle extreme temps up to 95 degrees without creating off-flavors. But for the most part, most fermenting beers benefit from some sort of temperature control.

Further, temperature control works both ways. There are times you want to warm up the fermentation (a diacetyl rest, for instance), and times you want to chill the beer (crashing prior to packaging, e.g.). The more control you have, the more you can do–and the more consistent your beers will be batch to batch. If you cannot control fermentation temperature, you’ll find it difficult to reproduce beers you like. Here are ways brewers control fermentation temperature, starting at the least expensive.

Ambient Temperature Only

Many new brewers assume that ambient room temperature is fermenting wort temperature. However, yeast is exothermic, meaning the yeast produces heat while it works. Actual wort temperature during fermentation can be 5-10 degrees higher than ambient temperature; further, the higher the temp, the faster the yeast works, and the more heat generated. If the ambient temperature is low enough it may not matter much–and by low enough, I mean in the mid-to-low 60s. You won’t be able to control fermentation temp but it won’t run away on you.

Swamp Cooler

The redneck way to cool things without electricity is to use a Swamp Cooler; you place a piece of cloth over a vessel, wet it, and as the water evaporates it cools the vessel. Put the fermenter in a turkey pan ($1 at the Dollar Store) filled with a couple of inches of water, and drape a t-shirt or similar over the fermenter, allowing the shirt to dangle in the water. The shirt will wick up water that, when it evaporates, will cool the fermenter. I was able to produce about a 5-degree drop with my swamp cooler setup, but your mileage will vary with ambient temp, relative humidity, and size of the water pan. Some brewers live where ambient is just too high for evaporation to work on its own. They use frozen water bottles added to the pan in the morning and at night to help keep the temp down.

Refrigerator or Freezer Fermentation Chamber

This is probably the most common approach besides doing nothing. Brewers will use either a refrigerator or freezer and an electronic control like an Inkbird 308 to manage fermentation temps. The refrigerator is turned to as cold as it will go, and when the temperature probe indicates the wort is
too warm, the controller turns on the refrigerator to cool it. If a heat source is also used, the controller will turn that on when wort temp is too cold.

The temperature probe can be held against the fermenter with a piece of insulation and a bungee cord or string; the insulation ensures the probe picks up the temperature of the wort, not ambient temperature. Some will use a thermowell, a hollow tube that extends from the bung into the wort, and into which the temperature probe is inserted. Typically the brewer will also use a heat belt or mat wrapped around the fermenter to allow warming the wort toward the end of fermentation for a diacetyl rest or even just to help the yeast clean up after itself. It’s also common in areas where ambient temperatures in the winter, such as my garage here in Wisconsin, can drop well below the desired fermentation temperature. There needs to be a way to warm the fermenter at times like these. In fact, if you have a pretty cold area to manage fermentation, you might not even need a refrigerated fermentation chamber–just a way to heat the wort up to the level that the yeast requires.

Probably the two most common ways of warming a fermenter like this are a FermWrap, or a seedling heat mat. Wrapped around the fermenter and held in place with string, wire, or a bungee cord, they apply warmth directly to the fermenter and thus, the wort. If ambient is fairly cold, some insulation like a towel may be wrapped around the fermenter. Some brewers use a light bulb inside a metal can, or a reptile heat bulb to add heat inside the fermentation chamber, but it’s a slower and less direct way to control heat.

It doesn’t matter much whether you use a refrigerator or freezer; it’s a personal preference. I prefer a refrigerator, as I don’t like lifting a fermenter into a freezer. You can get these cheaply used; Craigslist is a good source. I use both a large refrigerator that can handle two fermenters at a time, and a tall dorm-style refrigerator which is perfect for those whose space won’t allow a larger unit.

Glycol Chilling Units

Glycol, which mixed with water reduces the temperature at which it freezes, is used to chill coils suspended into a fermenter. Commercial units range in price from about $700 to $1000. The advantage of glycol is speed and control, as the chilling is applied directly within the wort through stainless coils inside the fermenter. The better glycol chillers can handle up to four fermenters at a time; each fermenter simply needs its own pump to control flow. Some have had success with a DIY glycol chiller. I created a Glycol reservoir inside the freezer compartment of my large fermentation chamber; it was quite effective in controlling fermentation temp, though less effective in crashing.

Others have repurposed air conditioners to glycol chilling, and still, others have used small dorm-style refrigerators for this purpose. If you’re interested in researching this, search “DIY glycol” on Homebrewtalk and you’ll find a number of threads dealing with this, including my own.

Kveik Yeast

This last isn’t fermentation temp control but rather a way to ignore it. Kveik yeast is an ancient yeast that developed in northern European countries. It is fairly immune to high-temperature fermentation, meaning it can handle fermentations up to 95 degrees without producing typical
off-flavors. While Kveik doesn’t offer the variety of strains that dry or other liquid yeasts present, it is an option for those who for whatever reasons simply cannot keep ferm temps down. When using Kveik yeast, high temperatures aren’t a bug, they’re a feature.

Posted in Brewing, Equipment | No Comments »

How to Use Chocolate in Your Beer

Thursday, April 9th, 2020

By Jesse Southard

Personally, I love chocolate beers. Before I was a homebrewer, I took a trip to the Czech Republic and had my fair share of beer. However, a chocolate beer stood out to me called Opat Chocolate Stout. I remember thinking how did they get so much chocolate flavor into this beer? Anyway, looking back I laugh because adding chocolate to your beer, in my opinion, is one of the easiest ways to elevate your beer’s flavor. You can bring out more chocolate flavors in a base recipe or build a recipe around chocolate. Either way, you need to have some basic knowledge on how to use chocolate in beer, what type of chocolate to use, and some tips on how to get the flavors right. The end goal is to have a chocolaty beer without the beer tasting artificial. So, my advice is to always use whole ingredients such as cocoa nibs, 100% cocoa powder, or pure chocolate extract. Let’s dig a little deeper.

Using Cocoa Nibs In Your Beer

Cocoa nibs are the closest thing you will find to the raw cocoa bean outside of the tropical regions that it is grown. The bean is harvested, fermented, and crushed to produce a raw cocoa nib. The nibs are then either packed for sale as a raw item or slightly roasted to produce a richer chocolate flavor. At any rate, if you buy raw or roasted you should taste the product before brewing with it to ensure it has the flavor you are looking for. If you are wanting control of the chocolate flavor, buy the raw nibs and roast them in your oven at home. You can accomplish this by setting your oven at 350 degrees Fahrenheit (177 degrees Celsius), then laying the nibs on a baking sheet and roasting them at five-minute intervals until they have reached the flavor you are looking for. If you fail to roast raw nibs before adding them to your beer, they will impart little-t0-know chocolate flavor. You can use cocoa nibs in any step in the brewing process.

In The Mash

If using cocoa nibs in the mash, you should crush the nibs as you would crush your grains and add them in with the rest of your grain bill. Adding to the nibs to the mash will extract a more bitter dark chocolate flavor which is preferred in more robust stouts and porters.

In the Boil

You can add the cocoa nibs to the boil which will also extract a more bitter dark chocolate flavor. When adding to the boil, I suggest pitching them into a hop spider so you can strain them after the boil.

Primary & Secondary

You can add them to your primary or secondary by first soaking them in vodka overnight. Pitching earlier in fermentation allows for more flavor extraction. Pitching in primary provides a more mellow dark chocolate flavor which is preferred in porters and brown ales. Pitching in secondary will produce a more subtle chocolate undertone which can be experimented with in nontraditional ways.

Using 100% Cocoa Powder In Your Beer

Cocoa powder is a more refined version of cocoa nibs. It has already been roasted to the manufacturer’s specifications and milled into a fine powder. You have no control over the roast factor; however, cocoa powder is a great way to get chocolate flavor into your beer. I do caution about using only 100% cocoa powder as anything else will have fillers, fats, evaporated milk, or other unnatural ingredients. 100% cocoa powder, in my opinion, is the most convenient cocoa product because it is sold in nearly all big box stores and is relatively inexpensive.

Using cocoa powder in your beer is fairly easy as you can add it at any stage to achieve your desired results.

In the Mash

You can add cocoa powder directly to the top of your grain bed when mashing or sparging. You do not want to mix this in when you dough in unless you enjoy having a stuck sparge. When you are finished doughing in, wait 15 minutes and sprinkle your desired amount of cocoa on top of the mash. Adding to the mash allows the chocolate flavor to be extracted while leaving the powder behind when lautering. You can achieve a more subtle chocolate flavor by adding it to the top of the grain bed when fly sparging. If you batch sparge, you can achieve the same effect by adding the cocoa after adding your sparge water. Both methods work perfectly for use in stouts, porters, brown ales, and out of style experiments.

During the Boil

You can add cocoa powder directly to the boil, any time during the boil, or at flame out. Adding at these times, gives you the same result in my experience. Adding cocoa to the boil provides a darker bitter chocolate flavor which is desirable in robust stouts and porters. If adding to the boil, leave the black sludge behind when transferring to the fermentation vessel.

Primary & Secondary

You can also add cocoa powder directly to primary or secondary. To keep things sanitized, you will want to make a vodka cocoa slurry by mixing cocoa powder in vodka. Just like cocoa nibs, adding cocoa powder in primary provides a more mellow dark chocolate flavor which is preferred in porters and brown ales. Pitching in secondary will produce a more subtle mellow chocolate undertone which can be experimented with in nontraditional ways.

Using Chocolate Extract In Your Beer

The simplest way to add chocolate flavor is by adding a chocolate extract. Now, there are plenty of chocolate-flavored extracts on the market, but we do not want to end up with an artificial tasting beer. So, do yourself a favor and ensure you are using pure chocolate extract. Unlike using cocoa nibs or cocoa powder, extract needs no contact time to achieve the chocolate flavor you want. However, it will impart an alcohol flavor that may be detectable in lighter beers. You can make your own extract at home with cocoa nibs and distilled spirits. A simple extract can be made by adding 6 ounces vodka and 3 ounces of cocoa nibs. Let them soak for a week and then straining off the nibs. You can get quite creative with cocoa nib roast time, extraction time, and type of distilled spirit. I personally like to soak my nibs in bourbon when making chocolate stouts.

To use pure chocolate extract in beer you will want to add it any time after the boil. However, since this product needs no contact time to extract the flavor, you can easily add too much. So, I prefer to add extract at packaging. When adding at packaging, you want to minimize oxygen exposure so you can rack off a few cups of beer to experiment with before adding the extract to your brew. I add drops of extract from an eyedropper to each glass, starting with three and going up three with each glass. You can experiment with more or less extract in each glass, just remember how many drops you added to reach your desired result. If you are adding extract to a five-gallon batch there are 80 cups in a gallon, so if you like nine drops of extract in a cup, you will need to add 720 drops of extract (9×80=720). According to Traditional Oven, there are 98.5 drops in one teaspoon, which means you would add just shy of 7.5 teaspoons (720/98.5=7.3) of extract to a five-gallon batch of beer.

Chocolate is a sweet treat that can be enjoyed in many ways; however, there is nothing like having a nice chocolate beer, especially one that you made yourself. It can be a nice compliment to freshly baked cookies, campfire smores, or even as a dessert beer. Whether you are chasing after that one chocolate beer of your dreams, or just want to experiment with chocolate, I hope that this article helps you in your homebrewing endeavors. Cheers!

Recipe Spotlight

Bill’s Double Chocolate Milk Stout is a great way to test the waters with several of these chocolate-flavor producing methods.

Posted in Brewing, Ingredients | No Comments »

Ensuring Success With Your First Lagers

Friday, March 20th, 2020

By Old Standby Brewing

You’ve been homebrewing for a while now and have pumped out some pretty tasty ales, impressing the hell out of friends and family; probably some IPAs, stouts, maybe even a porter or an ESB. Now you’re thinking you might want to try your skills at a crispy lager since you’ve been seeing them pop up more and more at breweries lately. Well, here are the most important things to consider before you take on the challenge of producing a tasty lager. The 3 most important things to remember when crafting a quality lager: Yeast, Temperature, and Patience! Let’s discuss further.

Your First Lager Recipe

Photo by Helena Lopes on Unsplash

As far as recipe development goes, it’s best to keep it simple in the beginning. Start with a basic malt bill that uses high-quality Pilsner malt and only small percentages of 1 or 2 specialty malts. Don’t worry about step mashing for this recipe. Pick a single infusion temperature (around 150°F) and mash in just as you would with all the ales you’ve brewed. Next, collect all that sweet wort into your kettle and once again, keep your hop schedule pretty simple. Refer to the BJCP guidelines for the lager style you’re brewing and keep the IBU in the suggested range. Perhaps you’ll want to use a noble hop variety or two here to really capture those traditional aromas and flavors. Once your boil is complete, which you may want to increase to 75 or 90 minutes to help reduce some off-flavors associated with high levels of pilsner malt, try to chill as quickly as possible and transfer to your sanitized fermenter. This was the easy part! If you’re looking for a great go-to lager recipe check out the Oktoberfest recipe created by Daily_Brewer. You can also check out the recipe section for more lager recipe inspiration.

Yeast Strains For Lagers

Here’s where your lager really needs some tender love and guidance to reach its full potential. Since lager yeast moves slower & does its best work at cooler fermentation temperatures, you’re going to want to pitch at least double (or maybe triple) the amount you normally pitch into your ales. This yeast also needs to be fresh so check the packaging dates. I try to use yeast that is dated within 1-2 months of my brew date. If you can’t get super fresh yeast, you’ll either want to purchase more or make a starter to get your yeast ready to tackle your lager. Remember, the yeast is doing all the work here, so make sure you’re adding enough to make your first lager attempt successful. I find that the pitch rate calculator on Brewer’s Friend is an excellent resource to determine how much yeast I actually need to use. It’s better to pitch more viable, healthy cells than not enough!

Lagers And Temperature Control

Now that you’ve brewed the beer and pitched plenty of fresh lager yeast, it’s time to create the optimum fermentation environment for your lager yeast to do the important work it needs to do. In order to create a choice lager, you have to be able to keep your fermenter at consistent lager temperatures for a long period of time. This means in the range of 48-52°F for 2 weeks and then down to almost freezing temps for a month or more. Each variety of yeast that you use will have an optimum fermentation range so use this information as your guide. If you don’t have the ability to control your fermentation temperature yet, you may want to consider not brewing a lager at this point in your homebrewing career. Sorry for the brutal honesty here, but I’m just trying to save you the heartache of your lager not turning out very good!

Stay Patient With Your Lagers

Sticking with the theme of keeping it simple, hold this temperature for at least 7-14 days before you do anything. Now, you’re going to be used to the activity that you’ve seen from your ale fermentations; you’ve possibly even blown a few airlocks off the top of your carboy, right? Well, lager fermentation happens much slower. Picture the sloth DMV scene in Zootopia or maybe even your last service call with your utility company! I digress. There are a few very well-known techniques for attempting to speed up your lager fermentation by some very well respected brewers, but I would urge you to keep it simple for your first lager and stick to a basic fermentation schedule which takes a few more days, but is less complex and doesn’t require you to take a bunch of gravity readings. Once your lager activity starts to really slow down after 7-14 days, raise the temperature of your fermentation vessel a few degrees, to the upper end of the range that we talked about earlier from the yeast manufacturer, and hold at this temp for at least another 3-4 days. This warming at the end of the fermentation will give your yeast a chance to clean up any off-flavors that have been produced. This is also known as a diacetyl rest. Diacetyl is a buttery flavor that you don’t want in your finished lager so be patient and give the yeast a chance to tidy things up. If you’re still seeing some activity in your blow-off, take a gravity reading to see if your lager is getting close to being finished. If not, give the beer a few more days to wrap things up.

Packaging Your Lagers

Photo by Adam Barhan via Flickr

When all activity in your fermenter has stopped and you’ve hit your final gravity, it’s time to start cooling your beer down to start the lagering process. The word lager, or lagern in German, means “to store” or “to keep,” so really you’re just beginning to create the amazing flavors that you’ve come to love from a crispy lager. Lower the temperature of your fermenter about 2-3 degrees per day (patience, remember?) until you get down to 32-35°F and hold at this temp for as long as you can possibly stand it! Usually, 3-4 weeks is a good lagering time, but some of the more powdery yeast strains will need longer to drop out of suspension completely and some higher alcohol lager varieties will need even more time to fully mature. It is best to do this lagering phase with all of your yeast still in the fermenter, so don’t worry about racking into a secondary fermenter at this time. This allows your lager yeast to continue working its magic and creating the delicate flavors that you’ll want in your finished beer.

Now that you’ve completed your lagering stage you’re probably really thirsty and hopefully, you brewed enough ales before this lager to get you through the last couple of months! If you have the ability to keg and force carbonate your lager, you could be enjoying pints in just a few days. If you bottle condition your beer, then you’re going to have to wait a couple more weeks for your lager to fully carbonate. Bottle carbonation happens when the remaining yeast in your beer consumes the priming dextrose that you add at bottling, but since you’ve just finished a month-long lagering phase, there isn’t too much yeast left in your beer. So once again be patient because carbonation will take longer than usual. I probably don’t have to remind you, but I will anyway since you’ve come this far, sanitation is so important when making quality beer after your boil is complete. When you make a lager there is nowhere for off-flavors to hide, so make sure you’re cleaning and sanitizing everything that will come in contact with your beer once it leaves your boil kettle.

When it comes time to pour the first pint of lager that you crafted and cared for over the last couple of months, you’re going to have a new appreciation for lager brewing. Pay close attention to the delicate and subtle flavors of the pilsner malt and the traditional aromas of the German hops. Planning your next lager is a great thing to do while you enjoy your first few pints of the brew you just completed! Prost!

Posted in Brewing, Lagering | No Comments »