Note: If you don t happen to have the capacity to mash this amount of grain, omit 5 lbs. of the German pilsner malt and add 3 lb. extra-light dried malt extract (DME) to the boil. You will then need only 2.5 gallons of water for the mash and 5 gallons of sparge water. This will also reduce your boil time to approximately 90 minutes. Boil for 45 minutes then add the flavor hops and Irish moss. Boil for 13 minutes and add the aroma hops. Boil for 2 more minutes then remove pot from stove. Cool wort for 15 minutes. Strain into the primary fermenter and add water to obtain 5-1/8 gallons. Add yeast when wort has cooled to below 80 F. Oxygenate-aerate well. Ferment at 70 to 72 F for 7 days. Rack into secondary and ferment until target gravity is reached and beer is clear (approximately 5 weeks). Prime and bottle/keg. Carbonate at 70 to 72 F for 3 to 4 weeks. Store at a cooler temperature (45-50F).