A half-metre-long, thin sausage that is somewhere between a Bratwurst and a Bockwurst in flavour, spicy, and with a special onion sauce: the Feuerwurst (fiery sausage) is a cult favourite in Würzburg. It was invented at the Treziak food stall, and the recipe for the spice mixture is a well-kept secret. At festivals and markets in Würzburg and the surrounding areas, the Feuerwurst goes on tour in a food van. You can find the Treziak kiosk year-round at the Unterer Markt in Würzburg, about a ten-minute walk from the station. More information and the tour itinerary of the Feuerwurst can be found here.