Brew day 05 Dec. 2014.
Cereal mash with 20% pale malt for un-malted wheat, added to main mash. Zest of 1/2 cutie added at flame-out and flesh of 1 cutie along with a bit of zest added at 4 days into ferment (Tuesday 09 December). 2 grams Mangrove Jack hefeweizen dry yeast for ferment, temperature 60F for first 3.5 days, then 71F for 3 days followed by return to 60F. Bottled Friday 19 December into (2) 550ML bottles and (6) 12 oz bottles for yield of approx. 108 oz. Primed 12 oz bottles with 2.9 gr. table sugar, 550 mL with 4.5 gr. for CO2 volume target of 3.4.
Wheat gelatinization temperature 136-147F.
Single sparge of grains with 1 gallon 170F water.
End of mash BRIX: 10.9
End of boil BRIX: 16 ( 3 quarts )
After topping up with 32 oz cold water to one gallon mark, BRIX: 12.5 (1.048-1.050 SG depending on source).
With following procedure efficiency was much improved vs previous recipes including unmalted wheat. From BeerSmith:
The process for performing the cereal mash phase is as follows:
Mill or grind your cereal adjuncts down into a fine grist – ideally smaller than your milled barley grains. Add about 20% of your total malted barley grains (i.e. Pale or Pilsner malt) to the cereal adjuncts. This malted barley will provide the enzymes needed to aid in converting and breaking down the sugars, as many cereal adjuncts don’t have sufficient enzymes by themselves.
Next add hot water at the rate of 2-3 quarts/lb (4-6 l/kg) to produce a fairly thin mash. This is a simple infusion, but you want to target the gelatinizing temperature ranges listed above depending on your adjunct. So if you are working with raw oats, for example, you need to be in the 127-138 F (53-59 C) range. Hold the gelatinization temperature ranfe for 20 minutes.
Slowly raise the temperature of the cereal mash up to a gentle boil and hold it for 20-30 minutes. As you do this the mash will go from a grainy mixture to a pretty sloppy gelatin mess that should coat the back of your spoon. When you reach the liquid goo phase, the cereal mash is good to go!
Finally add the gooey mixture into your main mash. If you are working directly with the hot liquid, you can often use a decoction calculator to figure out how high your starting mash temperature needs to be when adding the boiling cereal mash to hit your desired sugar conversion range – which is usually between 148-156 F (64-66 C). The other option is to use cold water to bring your cereal mash down to the target temperature before adding it to the main mash. After that you continue your conversion phase and sparge as you would with any regular all grain mash.
