Water treatment: Untreated RO water for the mash with 1 tsp CaSO4 and 0.5 tsp CaCl2. Sparge water is RO water trated with 0.25 tsp 10% phosphoric acid per 5 gallons.
Mash technique: Step mash, mash out, dark and crustal malts added at vorlauf.
Mash rests: 144°F (62°C) 60 minutes. 158°F (70°C) 10 minutes. 168°F (76°C) 15 minutes.
Kettle volume: 8.5 gallons (32 L)
Boil length: 90 minutes
Final volume: 6.5 gallons (25 L)
Fermentation temp: starts at 68°F (20°C) and let rise to 72°F (22°C) after 4 days.