Aaron welcomes author Alex Lewin to the Appropriate Omnivore podcast. Alex recently released the second edition of his book Real Food Fermentation. Real Food Fermentation is both a book about fermentation and a cookbook with many recipes of popular ferments. Alex delves into the books he read which led him to learning about fermentation. He discusses how with the pandemic, many people turned to fermentation. Alex even talks about the possibility of a certain ferment being able to help with COVID. Aaron and Alex then discuss how to ferment correctly, their favorite types of ferments, and foods that many don't realize are fermented.