1 can (12 ounces) frozen limeade concentrate, thawed
3/4 cup thawed cranberry juice concentrate
1/3 cup confectioners' sugar
1 ounce vodka, optional
5-1/2 cups ice cubes
In a blender, combine the limeade concentrate, cranberry juice concentrate, confectioners' sugar and vodka if desired. Add ice; cover and process for 1-2 minutes or until slushy. Pour into chilled glasses; serve immediately.