Cranberry Slush
["1 lb. fresh or frozen cranberries", "2 1/2 c. cold water, divided", "3 1/2 c. fresh or frozen unsweetened raspberries", "1 envelope unflavored gelatin", "2 c. sugar", "2 c. ginger ale", "1 3/4 c. raspberry ginger ale or additional ginger ale"]
["In a large saucepan, cook the cranberries and 1 1/2 cups water over medium heat until the berries pop, about 15 minutes. Stir in raspberries. Transfer to a blender or food processor; cover and process until smooth. Strain and discard seeds, reserving juice. Pour the juice into a 2-quart freezer-proof container; set aside. In a small", "saucepan, sprinkle gelatin over remaining water. Let stand for 1 minute. Stir in sugar.", "Cook and stir over medium heat until gelatin and sugar are dissolved. Add to berry juice. Stir in ginger ale; cover and freeze."]
["cranberries", "cold water", "raspberries", "unflavored gelatin", "sugar", "ginger ale", "raspberry ginger"]