1 lb. ground beef
1 med. chopped onion
3 c. tomato juice
1/8 tsp. dry mustard
1 tbsp. Worcestershire sauce
1 c. macaroni, uncooked
1 tbsp. vinegar
1 tsp. salt
1/8 tsp. pepper

Brown beef and onion in skillet. Add remaining ingredients. Cook, covered, until macaroni is done, about 15 to 20 minutes. Stir occasionally while cooking.