Sprinkle lemon juice over meat and leave for 1 hour. Heat butter in a frying pan and brown meat. Transfer to large saucepan. Put tomatoes in frying pan. Add salt, peeper, cinnamon and sugar. Boil for 5 minutes and add to meat. Simmer covered for 2 hours. Serve with potatoes, rice, macaroni or spaghetti. Serves 4 to 5.