Barbecue Sauce - cooking recipe

Ingredients

1 (14 oz.) bottle ketchup
1 (14 oz.) bottle water
3 Tbsp. white sugar
3 Tbsp. brown sugar
3 Tbsp. mustard
1 small onion, chopped
1/4 c. vinegar
3 Tbsp. Worcestershire sauce
1 Tbsp. cooking oil

Preparation

Chop onions and saute in 1 tablespoon cooking oil until soft and clear.
Add bottle of ketchup.
Fill bottle full of water and add to ketchup and onions.
Add rest of ingredients and cook over medium heat, stirring occasionally, for 45 minutes.