Barbecue Burger Mix

1 lb. ground beef
1/2 cup chopped onion
1/4 cup chopped green pepper
1/4 cup chopped celery
1 can (8 oz.) tomato sauce
1/4 cup catsup
1 Tbsp. vinegar
1 Tbsp. sugar
1 1/2 tsp. worcestershire sauce
1 tsp. salt
1/8 tsp. pepper

Brown meat in hot fat. Add vegetables and cook till tender. Add remaining ingredients and cover and simmer for 30 minutes.