Olga Loizon, founder of Olga's Kitchen, opened her first restaurant in Birmingham, Mich., in 1970. It was there that she began selling the Original Olga sandwich, which consists of broiled, seasoned beef and lamb topped with onions, tomatoes and Olgasauce wrapped in hot, grilled-to-order, secret recipe Olga Bread. In 1975, Olga began opening additional restaurants throughout Michigan. There are...