Hygienically Processed Active Dry Yeast is a kind of granulated tiny yeast particle which is dried and vacuum-sealed. Active Dry Yeast is used by non commercial bakeries to raise dough for baking bread rolls, cakes etc. Active Dry Yeast responds to sugar and converts it to carbon dioxide causing the mixture to grow. Hygienically Processed Active Dry Yeast comes in different packaging options to suit individual requirement.