noun
baker's yeast; brewer's yeast
Refers to the yeast species Saccharomyces cerevisiae, used in baking and brewing. In everyday contexts, it typically means the yeast used for bread-making.
パン酵母を使って自家製パンを焼いた。
I baked homemade bread using baker's yeast.
パン酵母はビール醸造にも利用される。
Baker's yeast is also used in beer brewing.