brewer's yeast

American  

noun

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

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brewer's yeast British  

noun

1. a yeast, Saccharomyces cerevisiae , used in brewing See yeast

2. yeast obtained as a by-product of brewing

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Etymology

Origin of brewer's yeast

First recorded in 1915–20

Example Sentences

See Examples For:

brewer's yeast

Many of the raw ingredients used to make beer, including barley, wheat and brewer's yeast, contain vitamin B6 and the brewing process doesn't kill it all off, research suggests.

From BBC ● Apr. 22, 2026

We found previously unknown centromeres in related yeast species that look like halfway stages between large, repeat-rich centromeres and the tiny ones in brewer's yeast.

From Science Daily ● Mar. 10, 2026

Originally developed as a resourceful use of leftover brewer's yeast, Marmite gained popularity with 20th century families for its high concentration of B12 and folic acid.

From Salon ● Sep. 26, 2023

But while brewer’s yeast is common enough, how the lager yeast’s other parent wound up in Bavaria has been harder to trace.

From New York Times ● Dec. 7, 2022

I must admit they’re doing their best to keep me in condition: they’re plying me with dextrose, cod-liver oil, brewer’s yeast and calcium.

From "The Diary of a Young Girl" by Anne Frank