Antipasto Dip
["1 medium onion, browned in oil", "1/2 c. vinegar", "1 bottle chili sauce", "1 c. ketchup", "1 large can white tuna in water", "1 bottle sweet cocktail onions", "1/2 jar mixed sweet pickles", "1 Tbsp. sugar", "1 bottle stuffed olives", "1 can sliced mushrooms"]
["In a large saucepan, bring all ingredients to a boil; refrigerate.", "Serve in small dip bowl with sturdy, large crackers."]
["onion", "vinegar", "chili sauce", "ketchup", "white tuna", "onions", "mixed sweet pickles", "sugar", "olives", "mushrooms"]