BBQ Sauce

I have been making BBQ sauce with this recipe for the past five years. It is so easy. Most of the time I have all the ingredients.

1 medium onion, chopped(optional)
2 tablespoons butter
2 tablespoons vinegar
2 tablespoons brown sugar
1 cup ketchup
3 tablespoons Worcestershire sauce
1 teaspoon mustard
1 1/2 teaspoon chili powder

In a medium saucepan saute onion in the butter. Then stir in vinegar, brown sugar, ketchup, Worcestershire sauce, mustard, and chili powder. Cook 10-15 minutes. Serve over chicken nuggets, hamburgers, or BBQ chicken.
source: Dana's Cookbook pg. 178.