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

Heil said she originally expected to find Saccharomyces cerevisiae, also known as brewer's yeast, which is commonly used in baking and is central to much of her lab's research.

From Science Daily • Jan. 21, 2026

Fred Walker, who produced canned foods, hired food technologist Cyril P. Callister to create a homegrown yeast spread using brewer's yeast from the Carlton Brewery.

From Salon • Jul. 10, 2023

Reed is studying nutritional supplements such as “pollen patties,” which are artificial discs the size of a small burger patties made from brewer’s yeast and other ingredients.

From Seattle Times • Oct. 30, 2022

Still another bacterium, the familiar E. coli, transferred DNA into brewer’s yeast, which is a fungus.

From New York Times • Aug. 13, 2018

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