The Role of Yeasts in the Food We Eat

There are hundreds and hundreds of yeast species all over the world. Professor Rush at Buffalo says that they're found quote everywhere in nature from tree sap to grape skins. Sometimes yeasts are traveling through the air around us and you can kind of catch them to make a sourdough starter or something like that. You see it in larger organisms like coral polyps or even aphids where they have like asexual reproduction but then they can also have sexual reproduction.