Barbecue Sauce
["3 Tbsp. butter", "1/2 c. vinegar", "1/2 c. water", "2 tsp. mustard", "1/3 c. onion, chopped", "1 c. catsup", "2 Tbsp. brown sugar", "2 Tbsp. Worcestershire sauce"]
["Saute onion in butter.", "Mix rest of ingredients with onions and simmer on low for 10 minutes."]
["butter", "vinegar", "water", "mustard", "onion", "catsup", "brown sugar", "Worcestershire sauce"]