1 (10 oz.) pkg. frozen raspberries, unthawed
1 (12 oz.) bottle sparkling mineral water
4 c. cubed, seeded watermelon

Place a layer of watermelon in a shallow pan, freeze until firm. Remove from freezer, let stand for 5 minutes. In blender alternate, watermelon, berries, mineral water. Blend until slushy. Serve. 5 1/2 cups.