Hamburger and Sonic also rely heavily on hamburger sales. Fuddruckers and Red Robin are hamburger chains that specialize in the mid-tier "restaurant-style" variety of hamburgers. Some restaurants offer elaborate hamburgers using expensive cuts of meat and various cheeses, toppings, and sauces. One example is the Bobby's Burger Palace chain founded by well-known chef and Food Network star Bobby Flay. Hamburgers are often served as a fast dinner, picnic or party food and are often cooked outdoors on barbecue grills. A high-quality hamburger patty is made entirely of ground (minced) beef and seasonings; these may be described as "all-beef hamburger" or "all-beef
Hamburger St. Louis World's Fair. Historian Frank X. Tolbert, noted that Athens resident Clint Murchison said his grandfather dated the hamburger to the 1880s with 'Old Dave' a.k.a. Fletcher Davis. A photo of "Old Dave's Hamburger Stand" from 1904 was sent to Tolbert as evidence of the claim. Various non-specific claims of invention relate to the term "hamburger steak" without mention of its being a sandwich. The first printed American menu which listed hamburger is said to be an 1834 menu from Delmonico's in New York. However, the printer of the original menu was not in business in 1834. In 1889,