Barbecue Sauce - cooking recipe

Ingredients

1/4 c. oil
1 large minced onion
2 Tbsp. cider vinegar
3 Tbsp. lemon juice
2 Tbsp. brown sugar
1 Tbsp. dry mustard
1 c. tomato sauce
1 c. water
1 tsp. celery seed
2 tsp. bitters

Preparation

Simmer 20 minutes.
Add 2 teaspoons bitters.