Brewer's Yeast

Brewer's yeast (also known as brewers yeast or brewing yeast) can mean any live yeast used in brewing. It can also mean yeast obtained as a by-product of brewing, dried and killed, and used as nutritional yeast. Beer brewing Beer brewers classify yeasts as top-fermenting and bottom-fermenting. This distinction was introduced by the Dane Emil Christian Hansen. Top-fermenting yeasts (so-called because they float to the top of the beer) can produce higher alcohol concentrations and prefer h ...