brewer's yeast

noun

1. a yeast, as of the genus Saccharomyces, suitable for use as a ferment in the manufacture of wine and beer.

brewer's yeast

noun

1. a yeast, Saccharomyces cerevisiae , used in brewing See yeast
2. yeast obtained as a by-product of brewing

Word History and Origins

Origin of brewer's yeast¹

First recorded in 1915–20

Example Sentences

A small quantity of brewers yeast is also added to aid in the fermentation.

From Project Gutenberg

Then stir in a large table-spoonful of the best brewers yeast; or twice that quantity, if the yeast is home-made.

From Project Gutenberg