Place all ingredients in a small saucepan and bring almost to a boil, stirring frequently. Reduce the flame to medium and stir constantly until the flakes have dissolved, about 10 minutes. Pour the juice into small dessert cups or a shallow bowl. Refrigerate until gelled, about 1 hour. Slice into cubes and eat as is or add to a fruit salad.
Per serving - 77 calories, 0 g fat (1% calories from fat), 1 g protein, 19 g carbohydrate, 1 g fiber, 0 mg cholesterol, 33 mg sodium