Citrus Frost
["1 1/2 c. orange sherbet", "1 (6 oz.) can frozen tangerine juice concentrate", "4 ice cubes", "3 (12 oz.) cans lo-cal grapefruit carbonated beverage, chilled"]
["In blender, combine orange sherbet, tangerine juice concentrate, ice cubes and 1 cup cold water.", "Cover; blend until smooth.", "Pour into 6 tall glasses.", "Pour carbonated beverage down sides of glasses.", "Stir gently.", "Makes 6 servings."]
["orange sherbet", "tangerine juice concentrate", "cubes", "beverage"]