Anyone have any restaurant suggestions in Sioux City, IA?

Okay, the best I can do with this is that I remember seeing a show on unique/regional sandwiches or burgers across the US. There was a place somewhere in Iowa or nearby that only served fresh ground beef burgers (or maybe like a loose meat type sandwich because it comes with a spoon) and the only seasoning you need is a little salt and pepper. The restaurant grinds the beef on the premises and cooks and serves it in a minimalist, diner style dining area. So if that interests you, maybe take that description and ask around. Someone is bound to know.