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
Rudolf Hamburger copies were sold. The East German authorities invited Rudolf Hamburger to exploit his new-found fame (if only as a bit-part player in his wife's success) by producing a volume of his own, but what was envisaged was a piece of propaganda controlled by the government, and Hamburger rejected the offer with an uncharacteristic absence of courtesy. He was nevertheless furious that Ursula's book concentrated on Ursula's espionage success. He felt that it unjustifiably played down his own contribution to their espionage partnership between 1930 and 1940. It may very well be that after this he redoubled his own work on