Hamburger such as , due to the occasional initial improper preparation of the meat, so caution is needed during handling and cooking. Because of the potential for food-borne illness, the USDA recommends hamburgers be cooked to an internal temperature of . If cooked to this temperature, they are considered well-done. Burgers can also be made with patties made from ingredients other than beef. For example, a "turkey burger" uses ground turkey meat, a "chicken burger" uses ground chicken meat. A "buffalo burger" uses ground meat from a bison, and an "ostrich burger" is made from ground seasoned ostrich meat. A deer
History of the hamburger have been numerous celebrations marking the centenary of the burger. Two locations in particular organized high-profile events to celebrate 100 years of the hamburger. One was held in Athens, Texas in November 2006, in honor of Fletcher Davis. In a resolution made by the State of Texas, it was established that Athens is the "Original Home of Hamburger". However, in August 2007, the state of Wisconsin made the same claim on behalf of the town of Seymour, the home of Charlie Nagreen who also claimed to be the creator of the hamburger. These two decisions have split the honor of