Piedmont North Carolina Style BBQ Sauce VI

Sauces

1 1/2 cups brown sugar
1/2 cup vinegar
1 stick butter
1 cup ketchup
6 ounces Heinz 57 Steak Sauce
1 tablespoon celery seed
1 cup onion; chopped
1 centiliter garlic
1 tablespoon dry mustard
red pepper flakes

Cook sugar, butter until bubbles. Add vinegar and whisk. Add rest and cook until thick.