1/3 c. salad oil
1/2 c. fresh or frozen chopped onions
1 (8 oz.) can tomato sauce
1/2 c. packed brown sugar
1/4 c. white vinegar
1 tbsp. Worcestershire sauce
4 tsp. chili powder
2 tsp. salt
1/4 tsp. dry mustard

Heat onions in hot salad oil and cook until tender. Add remaining ingredients and cook until mixture is well blended. It will keep a long time in the refrigerator.