The Orku Calcium Sulphate Gypsum Powder Bucket Food Grade Hydrous Sulfate is a very fine free flowing odourless and tasteless white powder, Calcium Sulphate is used in the food industry as a solidifying agent, coagulant, desiccant, anti-caking agent, stabiliser, dough improver, and leaving agent. It is also used in brewing as a filter and helps the fermentation process as well as in the manufacturing and as solidifying of Tofu.