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
Cao Hamburger Went on Vacation"), partly based on his childhood memories. Hamburger was also one of two creative directors for Rio's contribution to the 2012 Summer Olympics opening ceremony. Cao is the son of physicists and University of São Paulo professors Ernst Wolfgang Hamburger, of Jewish-German origin, and Amélia Imperio Hamburger, of Italian origin. He has three sisters: Sonia, a film producer, Vera, an art director and Esther, a university professor. His brother Fernando is a photographer. Cao Hamburger Carlos Império Hamburger, better known as Cao Hamburger (; born 1962 in São Paulo), is a Brazilian screenwriter and director of movies and