In a blender, combine water, lemonade concentrate, strawberries, and ice.
Blend until fully incorporated.
Pour mixture into a freezer container and freeze for at least 12 hours (it can last in your freezer for up to 3 months).
When you are ready to serve, remove from freezer and let stand at room temperature for at least 1 hour before serving.
Divide frozen slush into 4 large glasses and pour 1/4 cup of Sprite in each cup. Serve immediately.
Although this is only enough for 4 servings, it can easily be multiplied to serve more people.
Notes
COULD I SUBSTITUTE THE SPRITE FOR SOMETHING ELSE?For this recipe, we highly recommend using Sprite, for the carbonation and flavor. However, you could easily substitute it. Here are some substitutions we recommend:
Lemon Lime Soda
Cherry 7 Up
Fresca
Mt. Dew
Lemonade (if you are looking to go without carbonation).