Pineapple-Orange Granita

Makes 7 servings

2	cups pineapple-orange juice
6	ounces diet ginger ale (3/4 cup)
1/4	cup white wine or white grape juice
1	packet sugar substitute

In a quart-size resealable bag, combine all ingredients. Seal tightly and store in freezer until firm.
At time of serving, remove from freezer and let stand 15 minutes to soften slightly.
Using a meat mallet, pound to crush ice mixture. Spoon into wine goblets or dessert dishes. Store remaining ice mixture in freezer until needed.