Sandor Katz is an American author and fermentation expert known for his work in promoting the art of fermentation. He has written several influential books, including Wild Fermentation and The Art of Fermentation, which explore various fermentation techniques and their health benefits. Katz is often regarded as a key figure in the modern fermentation movement. Katz's passion for fermentation began in the 1990s when he started experimenting with making his own fermented foods. He has since traveled extensively, teaching workshops and sharing his knowledge about the cultural and historical significance of fermented foods around the world.