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
Rudolf Hamburger case of Rudolf Hamburger was evidently one that the government took seriously. Hamburger was held in a wooden building which was attached to a police station in Chongqing for approximately thee weeks. He was interrogated about who he was, who had sent him and what he was doing. No Chinese reports of his interrogations have been accessed, but recalling these events many years later he indicated strongly that he had given nothing away. After eight days the interrogation sessions resumed, now involving serious physical torture, but still Hamburger did not betry his comrades. Early in the morning, after approximately three