Baking powder is a dry chemical leavening agent, a mixture of a carbonate or bicarbonate and a weak acid. Baking powder is used instead of yeast for end-products where fermentation flavors would be undesirable, and to speed the production of baked goods.

发酵粉是一种干燥的化学膨松剂，是碳酸盐或碳酸氢盐与弱酸的混合物。 在发酵风味不理想的最终产品中，用发酵粉代替了酵母，并加快了焙烤食品的生产。