What is Yeast?

Yeast are single-celled fungi. As fungi, they are related to other fungi that people are more familiar with, including: edible mushrooms available at the supermarket, common baker’s yeast used to leaven bread, common brewer’s yeast used to ferment beer, molds that ripen blue cheese, and molds that produce antibiotics for medical and veterinary use. Many consider edible yeast and fungi to be as natural as fruits and vegetables.

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