Substitute the pale malt for 6.6 lb (3 kg) pale/light liquid malt extract.
Add the crush roasted barley, black malt, and crystal malt to one gallon (3.8 L) of 160° F (71° C) water. Let steep for 30 minutes. Afterward, strain out the spent grains, sparge with hot water, and collect the liquid extract. Add 1 gallon (4 L) additional water, the malt extract syrup, and all of the hops. Bring to a boil and continue to boil for one hour. When 10 minutes remain add Irish moss. After a total wort boil of 60 minutes, turn off the heat. Then strain out and sparge hops and direct the hot wort into a sanitized fermenter to which 2 gallons (7.5 L) of cold water have been added. If necessary, add additional cold water to achieve a 6-gallon (23 L) batch size. Add a starter culture of yeast when temperature of wort is about 70 °F (21 °C). Preferably ferment at 65–72° F (18–22° C) for about 7–12 days or until fermentation is complete and the beer appears to clear and darken. For best results, “cellar” or age at 50° F (10° C) for 2–3 days to help drop yeast out of suspension, but this is not at all crucial to the quality. Bottle with corn sugar. Age and carbonate/condition at temperatures between 60° and 70° F (15.5–21° C) until clear (about one week).