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 or "fortified refuge" and is a widespread component of place names. The first element of the name is perhaps from Old High German "hamma", referring to a bend in a river, or Middle High German "hamme", referring to an enclosed area of pastureland. "Hamburger" in German is the demonym of Hamburg, similar to "frankfurter" and "wiener", names for other meat-based foods and demonyms of the cities of Frankfurt and Vienna (Wien), respectively. The term "burger", a back-formation, is associated with many different types of sandwiches, similar to a (ground meat) hamburger, but made of different meats such as buffalo in