Sandor Katz has even had a poem written about his singular obsession:
Come on friends and lend me an ear,
I’ll explain the connection between wine and beer,
And sourdough and yogurt and miso and kraut,
What they have in common is what it’s all about.
Oh the microorganisms, Oh the microorganisms. . .
But don’t let that put you off. Katz is the author of Wild Fermentation: The Flavor, Nutrition, and Craft of Live-Culture Foods. You can read the introduction, and various other excerpts online, as well as order the book, of course. Microbes are agricultural biodiversity too!