Butter Barbecue Sauce
["1/2 c. butter or margarine", "1/2 c. chopped onion", "1/2 c. catsup", "1/4 c. lightly packed brown sugar", "3 Tbsp. Worcestershire sauce", "1 tsp. salt", "1/4 tsp. pepper", "Tabasco to taste", "1 bottle Bulls Eye barbecue sauce"]
["Melt butter in a pan; add onion and cook until clear.", "Add all other ingredients and simmer for 5 minutes.", "Pour over brisket as in recipe to follow."]
["butter", "onion", "catsup", "lightly packed brown sugar", "Worcestershire sauce", "salt", "pepper", "barbecue sauce"]