-6.50 lb Maris Otter
-0.50 lb Crystal 60L
-0.50 lb Chocolate Malt
-0.25 lb Carafa III Special
-0.50 oz First Gold pellets (10.5% AA, 60 minutes)
Mash was 15.50 quarts and was 156F for 60 minutes. I sparged it to collect a total of 7 gallons for the boil.
NOTE: My system's extraction...