Notes on Bread Baking. (Sir James Clark.)
Bakers put alum in bread to make it carry water, feel soft, and appear white. Alum does this by coagulating the gluten. The combination is deleterious.
Liebig saturates lime with water, and uses this water in making bread. This lime equally coagulates the gluten, makes the bread equally white, removes all acid, and supplies the lime which wheat and rye want. Use a proportion of 5 lbs. of lime-saturated water to 19 lbs. of flour.