"Note: I never have bread flour on hand, so I always use all-purpose flour, subbing 1 tablespoon of vital wheat gluten in for every cup of flour (or 1 tablespoon gluten for about every 5 ounces of flour if you prefer to weigh your ingredients). For this doubled recipe, I used 16 ounces of whole wheat flour, about 3 ounces of gluten and made up the rest of the 34 ounces with all-purpose flour...."