1 cup fresh strawberries
1/2 cup fresh raspberries
1/4 cup fresh blueberries
3/4 cup frozen apple juice concentrate
1-2/3 cups chilled carbonated water
Combine berries and apple juice concentrate in a blender container. Cover and blend until smooth. Pour into a pitcher and slowly stir in carbonated water. Pour over ice cubes in tall, chilled glasses. Serve immediately.