A vegetarian from Vermillion, South Dakota, wonders about the origin of a popular loose meat sandwich called a Tavern Sandwich. It’s like a sloppy joe, and also goes by the monikers Maid-Rite and Tastee. Martha notes a diner in Sioux City, Iowa, called Ye Olde Tavern, that claims to have created the sandwich. Still, with food origins, plenty of people lay claim to the inventions of everything, from hamburgers to breakfast cereal. Here’s a list of 8 Regional Foods You Might Not Know. This is part of a complete episode.