Mash pale malt and flaked barley in low-alkalinity water (acidify as necessary to produce a mash pH of 5.3–5.5) at a temperature of 146–150° F (63–65° C) for 60 minutes. Add roast barley to mash at the end of mashing period. A mash out step to 168° F (76° C) is helpful, but optional. Sparge the mash with low-alkalinity water that is acidified to a pH between 5.2 and 5.7. Boil the wort for 60 minutes. Minimal brewing salts are desirable in the water. As a starting point, when using reverse osmosis (RO) or distilled water, add a half-teaspoon of both gypsum and calcium chloride per 8 gallons (30 L) of water, or use a program such as Bru’n Water to guide the mineral and acid additions.