2 1/2 cups cold water 2 12 ounce cans frozen pink lemonade concentrate 2 10 ounce packages frozen red raspberries in syrup 3 cups ice cubes 10 cups lemon-lime carbonated beverage

1. In a blender combine half the water, one can lemonade concentrate, and one package frozen raspberries in syrup; add half the ice. Cover and blend until smooth and slushy, stopping to scrape down sides as necessary. Transfer mixture to a 6-quart* freezer container. Repeat with remaining water, lemonade concentrate, raspberries, and ice. Cover and freeze about 4 hours or until firm.
2. To serve, scoop lemonade mixture into glasses. Slowly pour carbonated beverage into lemonade mixture; stir gently