Hamburger patties" to distinguish them from inexpensive hamburgers made with cost-savers like added flour, textured vegetable protein, ammonia treated defatted beef trimmings (which the company Beef Products Inc, calls "lean finely textured beef"), advanced meat recovery, or other fillers. In the 1930s ground liver was sometimes added. Some cooks prepare their patties with binders like eggs or breadcrumbs. Seasonings may include salt and pepper and others like as parsley, onions, soy sauce, Thousand Island dressing, onion soup mix, or Worcestershire sauce. Many name brand seasoned salt products are also used. Raw hamburger may contain harmful bacteria that can produce food-borne illness
Viktor Hamburger Viktor Hamburger Viktor Hamburger (July 9, 1900 – June 12, 2001) was a German professor and embryologist. In 1951 he co-authored the Hamburger-Hamilton stages. Hamburger lectured, among others, Nobel Prize-winning neurologist Rita Levi-Montalcini, who identified nerve growth factor along with Hamburger when they collaborated. Hamburger began to work at Washington University in St. Louis in 1935; he retired from his professor position in 1969 and continued researching until the 1980s. Hamburger was born on in Landeshut, Silesia, Germany to Max Hamburger and Else Gradenwitz. In the 1960s, Hamburger did embryological work that established that chick movements in embryo were spontaneous