DIRECTIONS
Mill the grains and mash at 150°F (66°C) for 60 minutes. Recirculate until the runnings are clear, then run off into the kettle. Sparge and top up as necessary to get about 6 gallons (23 liters) of wort, depending on your evaporation rate. Boil for 90 minutes, adding hops according to the schedule. After the boil, do a whirlpool step: Stir or recirculate to create a vortex, add the whirlpool hops, and allow 30 minutes to steep. Chill to about 48°F (9°C), aerate the wort, and pitch the yeast. Ferment at 54°F (12°C) until your gravity has dropped to about 1.020, then raise to 59°F (15°C) for a diacetyl rest. When fermentation is complete and the gravity has stabilized, crash to 32°F (0°C) and lager 3–4 weeks. Package and carbonate to about 2.6 volumes of CO2.
BREWER’S NOTES
Water: We adjusted our local water with gypsum and chalk in the mash and calcium chloride in the mash and boil. Our target water profile: calcium 52.3 ppm, magnesium 1.5 ppm, sodium 10.9 ppm, sulfate 45.6 ppm, chloride 56.3 ppm, bicarbonate 57.8 ppm.
Mash: On our 15-barrel system, mash-in takes 10–15 minutes, and we rest for 10 minutes before we begin recirculation (vorlauf) for 30 minutes. If brewing at home, just test for conversion or give it plenty of time.