Original Gravity: 1.049
Final Gravity: 0.998
ABV: 6.7%
IBU: 23
SRM: 3.5
Crush the base malts as you normally would. If you are using the black malt, mill it separately and finely. The small amount of black malt can improve clarity at the expense of a bit of extra color (around 1 SRM). The flaked adjuncts do not need to be milled.
Mix grains and adjuncts and mash in at 150°F (66°C) with 13.5 qt. (12.8 L) of water. Stir the mash every 5 minutes or so if it is possible to do so without losing heat. Take periodic iodine tests and mash out when you receive a negative result. Recirculate the wort until it runs clear or you have recirculated more than 10 qt. (about 10 L). Run off and sparge with water hot enough to maintain a grain bed temperature of 165–168°F (74–75°C). As you run off, do not let the pH of the runoff exceed 5.8. (You may need to collect less than 6 gal./23 L.)
Add water, if needed, to the kettle to yield enough wort to achieve 5 gallons (19 L) after a 90-minute boil. Boil for 90 minutes, adding bittering (Mosaic) hops for the final 60 minutes of the boil. Add the Irish moss and yeast nutrients with 15 minutes left in the boil. After knockout, add whirlpool hops and let steep for 10 minutes before chilling the wort.
Chill the wort and transfer it to your fermenter. Aerate thoroughly and pitch yeast from yeast starter. Ferment at 68°F (20°C). When fermentation is winding down, at around 5–6°P (1.020–1.024), add the enzyme. When terminal gravity is reached, rack beer to secondary fermenter containing the dry hops in a mesh bag.
Dry hop for 7–10 days, and then prepare a PVPP solution by dissolving the powder in as small an amount of water as you can manage: a couple of ounces (about 60 mL) should be plenty. Remove the dry hops and swirl the beer gently. Without splashing, stir the PVPP gently into the top layer of beer and re-affix the fermentation lock. Let the beer sit for at least 6 hours or overnight before racking to a keg or bottling bucket. Carbonate to around 3 volumes (6 g/L) of CO2. If you bottle condition and fermented at 68°F (20°C), use 6.3 oz. (170 g) of corn sugar to prime the bottles.
