"Hard seltzer" refers to a type of alcoholic beverage that is made by combining sparkling water with a small amount of alcohol and flavoring. Full definition
Roper last month said that retailers are being more cautious about their buying for hard seltzer after hard soda suffered from lagging interest from consumers after a big spike in demand when those products first hit shelves. (fortune.com)
Truly Sparkling is a newer brand by Boston Beer that is aiming to tackle the emerging hard seltzer alcohol beverage category. (fortune.com)
Nielsen says that it has heard it called hard seltzer, spiked water, and spiked seltzer. (fortune.com)