A commercial preparation in either powdered or compressed form,containing yeast cells and inert material such as meal and used especially as a leavening agent or as a dietary supplement.

• 发酵粉（饼），一种粉状或饼状的商业制剂，含有酵母细胞和惰性物质，如玉米粉，专门用作发酵剂或饮食的补充物。