酵こう母ぼ

noun

yeast; leaven

A microorganism used in fermentation, baking, and brewing. The term covers both the organism itself and products containing it.

• パンを作つくるには酵こう母ぼが必ひつ要ようです。

  You need yeast to make bread.

• ビールの醸じょう造ぞうに酵こう母ぼを使つかいます。

  Yeast is used in brewing beer.