The US writer and activist Sandor Katz is one of the world’s leading experts on fermentation – a process born of the collaboration between people, time and microbes that makes possible such beloved culinary staples as bread, beer, wine, kimchi and miso. A self-described ‘fermentation fetishist’, Katz views this process as a humbling means of reconnecting with nature and its foodways, and has written several books on the subject and leads fermentation workshops in the US and abroad. In Sandorkraut, the US filmmakers Emily Lobsenz and Ann Husaini explore how an HIV diagnosis in 1991 led Katz on an unexpected path from New York City to a queer community in Tennessee, where he developed a spiritual connection with all things fermented.