Boston Lager Clone (Original BBC Recipe)

This recipe as designed requires a decoction mash (see below). I chose to do a step-mash instead without water additions at each step.

Recipe Type: All Grain
Yeast: Wyeast 2035
Yeast Starter: yes
Batch Size (Gallons): 6
Original Gravity: 1.048
Final Gravity: 1.009
Boiling Time (Minutes): 60
IBU: 26
Color: 7.86
Primary Fermentation (# of Days & Temp): 10/50
Secondary Fermentation (# of Days & Temp): 5/50
Additional Fermentation: 42/30
Tasting Notes: Enjoy
Boston Lager Clone (Decoction/Krausening AG recipe)

Ingredients:

9.5 lbs American 2-Row
0.5 lbs Crystal 60
1oz Tettnanger 60 minute addition
1oz Hallertau 20 minute addition
1oz Hallertau 10 minute addition
1oz Hallertau in Secondary
Wyeast 2035

OG: 1.048
TG: 1.009
C: 7.85
IBU: 26
ABV: 5.0

Heat 12.5 quarts of strike water to target 105 degrees.
Hold mash at 105 for 30 minutes.

Remove 5 pints of mash, boil and return to mash tun. Stir and verify temp of approx 122. After reaching 122 rest for 30 minutes.

Remove 11 pints of mash, boil and return to mash tun. Stir and verify temp of 155. Here 155 is very important for the body of the beer. After reaching 155 rest for 30 minutes.

Heat 15 quarts of water to 168.

Remove 7 pints of mash, boil and return to mash tun. Stir and verify temp of 168. Do not exceed 170 here.

Settle grain bed and clear runnings. Sparge with 15 quarts(above) at 1 quart minute.

Boil wort adding hops at intervals above and chill wort down to 50 degrees.

Remove 1/6 of final wort volume and refrigerate for krausening below.

Pitch the yeast and ferment for 10 days at 50 degrees. Save 1/6 of the yeast starter and refrigerate.

Move to secondary and dry hop. Check gravity and record for use below. Hold at 50 degrees.

Remove saved yeast and wort, mix and warm to 50 degrees. Take the secondary gravity above and add 0.015. Example 1.010 + 0.015 = 1.025. Record the gravity of this mixture each day until it reaches the calculated value. Once the value is reached add the mixture to the secondary and bottle immediately. Do not add priming sugar, this technique will create your carbonation.

Once bottled, store at 50 degrees for 2 weeks and then drop the temp by 1 degree each day until 30 degrees is met. Lager at 30 degrees for 3 weeks.

Enjoy.

Add 1 tsp Irish Moss @ 10 mins or 1 Wirlfloc tablet @ 15 mins.
Ferment in primary for 10 days.
Ferment in secondary for 5 days (if kegging, move into keg at this time for 5 days).

Cold crash for 2 days and add gelatin finings on Day 2. Dissolve 1 tsp finings in 2 cups (16 oz) of hot water. Let cool to room temperature and add to keg.

Keg and force carbonate at 30 psi for 20 minutes using liquid side dip tube. Rock the keg during this time to accelerate the absorption of CO2. Stop every 4 minutes to listen to the keg. The bubbling sound should stop after only a few seconds meaning the CO2 is dissolving into the beer. Lower the pressure to 20 psi. Wait 1-2 hours to let it settle, then adjust the CO2 to serving pressure before testing the beer.