History of the hamburger in the United States is found in Japan, but is a local variation. History of the hamburger in the United States A hamburger (or burger) is a sandwich that consists of a cooked ground meat patty, usually beef, placed between halves of a sliced bun or between slices of bread or toast. Hamburgers are often served with various condiments, such as mustard, mayonnaise, and ketchup, and other options including lettuce, tomato, onion, pickles, and cheese. The Texas historian Frank X. Tolbert attributes the invention of the hamburger to Fletcher Davis of Athens, Texas. Davis is believed to have sold hamburgers at his café at
Hamburger University Hamburger University Hamburger University is a training facility of McDonald's, located in Oak Brook, Illinois, a western suburb of Chicago. This corporate university was designed to instruct personnel employed by McDonald's in the various aspects of restaurant management. More than 80,000 restaurant managers, mid-managers and owner/operators have graduated from this university. Since its establishment, Hamburger University has been situated on an campus. Restaurant employees receive approximately 32 hours of training in their first month with McDonald's and more than 5,000 students attend Hamburger University each year. Founder Ray Kroc oversaw lessons at its beginning. In 2016 McDonald's Corporation announced it