1 1/2 lb. ground chuck or round
1 c. ketchup
2 tbsp. sugar
2 tbsp. vinegar
2 tbsp. prepared yellow mustard
1 1/2 tsp. Worcestershire sauce

Brown beef in large skillet. Drain off excess fat. Add remaining ingredients. Simmer until thoroughly heated. Serve on fresh kaiser rolls or hamburger buns. Chopped onions and/or chopped green peppers can be added when browning beef, if desired.