On today's episode of Ketchup Issues Dave, Nastassia, and The Rest are joined by Arielle Johnson. She talks a bit about her forthcoming book, Flavorama, and answers lots of listener questions about fermentation. Lacto Fermentation! Cold Fermentation! Cacao Fermentation! Plus: hydrocolloids, STEAM vs STEM, dishwasher cooking & how to troubleshoot a barbecue sauce.Have a question for Cooking Issues? Send us a voicememo while we’re all social distancing or ask in the chatroom.  Heritage Radio Network is a listener supported nonprofit podcast network. Support Cooking Issues by becoming a member!Cooking Issues is Powered by Simplecast.