1 can (10 3/4 oz.) Campbell's condensed tomato soup
1/3 c. Worcestershire sauce
1 sm. onion, chopped
3 tbsp. vinegar
2 tbsp. packed brown sugar

In 1 quart saucepan over medium heat, heat all ingredients to boiling, reduce heat to low and simmer 10 minutes. Makes 1 3/4 cups sauce.