1 (10-ounce) package frozen strawberries in syrup, thawed and undrained
1 (24-ounce) bottle white grape juice, chilled
2 (12-ounce) cans club soda, chilled
Process strawberries and syrup in a blender until smooth, stopping once to scrape down sides.
Stir together strawberry puree and white grape juice; add club soda.