Red Star Double-Acting Baking Powder is a superior aluminum-free leavener especially applicable where the product requires rapid batter aeration and increased batter viscosity. Double Acting Baking Powder is a balanced blend of leavening acids and soda designed for general baking use. Its controlled action provides prolonged bench tolerance and results in baked products having excellent grain and texture.Double-acting baking powder has two types of acids, which react at different times during baking. The first acid reacts by creating gases when mixed with liquid. The second acid reacts by creating gases when exposed to the heat in the oven. The reaction of such double-acting adds volume to baked goods that don’t have acid in them, such as baked goods like cakes and cookies. When a recipe calls for baking powder, this means double-acting baking powder. Regular baking powder is the same as double-acting baking powder. For those interested in buying double-acting baking powder, check out our double-acting baking powder, available in bulk or home use.