White Claw. Pure refreshment, like nothing you've ever tasted before. 5% BrewPure® alcohol, pure seltzer water and a hint of fruit. 100 calories. Gluten Free. White Claw® Hard Seltzer is made using a blend of seltzer water, gluten free BrewPure® alcohol, and a hint of fruit. Their 5 fruit flavors contain only 100 calories, 2g sugar, and all natural flavors. Discover the refreshing taste of White Claw® Hard Seltzer today. Low Carb. Thanks to this weeks listener of the week TSA Precheck!