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

The yeast Saccharomyces cerevisiae is commonly called brewer’s yeast because it’s used to brew beer and ferment other alcoholic beverages.

From Science Magazine

"These organisms have been used for centuries to produce food, and they are incredibly efficient at converting carbon into a wide variety of complex molecules, including many that would be almost impossible to produce using a classic host like brewer's yeast or E. coli," said Jay Keasling, who is a senior scientist at Berkeley Lab and a professor at UC Berkeley.

From Science Daily

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

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

Moreover, 19 kinds of molds and yeast, including Brewer’s yeast, the mold that makes penicillin, and a few human pathogens, were also cool, particularly near the center of their colonies.

From Science Magazine