Frosty Pineapple Punch
["1 (46 oz.) can pineapple juice, chilled", "1 (12 oz.) can frozen pineapple-orange juice concentrate, thawed and undiluted", "1 (6 oz.) can frozen lemonade concentrate, thawed and undiluted", "1/2 gal. pineapple or lemon sherbet, softened"]
["Combine first 3 ingredients in a punch bowl.", "Just before serving, spoon sherbet into punch bowl by heaping tablespoonfuls; stir gently.", "Serve immediately.", "Yields 3 quarts."]
["pineapple juice", "pineapple", "frozen lemonade concentrate", "pineapple"]