Barbecue Sauce - cooking recipe

Ingredients

1 medium onion, finely chopped
2 tsp. mustard
1/2 c. water
4 Tbsp. soy sauce
3/4 c. brown sugar
1/4 tsp. garlic salt
1 small bottle ketchup
1 Tbsp. lemon juice
4 Tbsp. Worcestershire sauce
1/2 stick butter
1/8 tsp. black pepper

Preparation

Add all ingredients in large pot.
Boil until butter melts well.