Barbecue Sauce
["1 medium onion", "2 Tbsp. butter", "2 Tbsp. vinegar", "2 Tbsp. brown sugar", "4 Tbsp. lemon juice", "1 c. ketchup", "2 Tbsp. chopped parsley", "1/2 Tbsp. prepared mustard", "1/2 c. water", "3 Tbsp. Worcestershire sauce", "pinch of salt", "pinch of cayenne pepper"]
["Brown onion in butter.", "Add remaining ingredients.", "Simmer 30 minutes."]
["onion", "butter", "vinegar", "brown sugar", "lemon juice", "ketchup", "parsley", "mustard", "water", "Worcestershire sauce", "salt", "cayenne pepper"]