1 lb. ground beef
1/2 c. chopped onion
1/4 c. chopped green pepper
1/4 c. chopped celery
1 (8 oz.) tomato sauce
1/4 c. catsup
1 tbsp. vinegar
1 tbsp. sugar
1 1/2 tsp. Worcestershire sauce

Brown meat. Add vegetable and cook until tender. Add remaining ingredients; mix well. Simmer 20 minutes. Spoon on hamburger buns.