Ingredients
1/4 cup lime juice8 cups cubed seedless watermelon1/4 cup sugar2 cups diet lemon-lime soda, chilled
Preparation
In a blender, cover and process the lime juice, watermelon, and sugar in batches until smooth. Pour into a freezer-proof container. Cover and freeze for 30 minutes or until edges begin to freeze.
Stir and return to freezer. Repeat every 20 minutes or until slushy, about 90 minutes. Spoon 3/4 cup into bowls or glasses; add 1/4 cup soda.
