For the colloquial use of this term see Fatburger (drain obstruction)Fatburger Inc. is an American fast casual restaurant chain. Its tagline is The Last Great Hamburger Stand. While it is a fast food restaurant, the food is cooked and made to order. Some Fatburger restaurants have a liquor license, as well as Fat Bars. Its franchise headquarters are in Beverly Hills, California. In addition to the United States, the chain operates in 19 other countries. The Fatburger menu is centered primarily on hamburgers, in which it offers patties of varying size, small to large, and in varying number patties, along with add-ons such as cheese, bacon and eggs.