Ben Grayson'S Barbecue Sauce
["1/2 c. margarine", "1/2 large onion, grated", "3/4 c. ketchup", "3/4 c. water", "1/2 c. lemon juice or part vinegar", "several slices of lemon", "2 Tbsp. brown sugar", "1 Tbsp. brown sugar", "1 Tbsp. sweet pickle relish", "3 Tbsp. Worcestershire sauce", "salt, black and red pepper to taste"]
["Cook onions in butter until soft.", "Add other ingredients and simmer 15 minutes (preferably 30).", "Makes about 2 1/2 cups and will be thick."]
["margarine", "onion", "ketchup", "water", "lemon juice", "lemon", "brown sugar", "brown sugar", "sweet pickle relish", "Worcestershire sauce", "salt"]