Mill the grains and mash at 152°F (67°C) for 60 minutes. Vorlauf 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—or more, depending on your evaporation rate. Boil 60 minutes, adding hops and finings according to the schedule. After the boil, chill to about 50°F (10°C), aerate well, and pitch plenty of healthy yeast. Ferment at 56°F (13°C) for 7 days, then allow the temperature to rise to 70°F (21°C) for a diacetyl rest. When fermentation is complete, crash to 35°C (2°C), then package and carbonate to about 2 volumes. Store cold for at least 6 weeks before serving.