Bulk treat 10 gal. (37.85 L) RO water with 2 g each pickling lime, gypsum, and calcium chloride.
Follow low-oxygen brewing practices to the extent possible with your system. Techniques employed were pre-boiling and chilling strike water, purging tubing and grain bed with CO2, underletting mash, using a mash cap, and conducting a full-volume mash to avoid need for sparging.
Dough in at 144°F (62°C), then step mash at 148°F (64°C), 153°F (67°C), 163°F (73°C), and 170°F (77°C) for 45, 10, 45, and 15 min., respectively.
Boil gently with kettle partially covered for 60 min. Adjust pH to 5.1 with 15 min. remaining in boil. Add Whirlfloc with 5 min. left in boil.
Chill rapidly and transfer clear wort to fermenter, minimizing carryover of trub and hop matter as much as possible. Oxygenate to 16–18 ppm. Pitch yeast at 62°F (17°C) and allow to free-rise to 66°F (19°C) at about 60% of expected attenuation.
Closed-transfer to CO2-purged keg with 3-4 remaining gravity points and spund to 2.8 vol. (5.6 g/L) CO2. Lager until clear.
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