I operated a restaurant equipment business for over ten years. One of things that always fascinated me was how people got started in the catering business. Almost always it started off as a hobby turned underground side hustle. I say underground because they built their client list prior to properly setting up their catering business up according local laws and requirements. Lets dive into what I call the catering underground. For every startup there is always a reason or in this case a hobby, interest, or natural born talent that started these three tasty side hustles.