A German spa town is the namesake of which beverage?
In the 1700s, spa towns became popular among wealthy Europeans, who would soak in mineral water and supposedly wash away their ailments. Some of the mineral water was bottled and sold around the world, and the Selters brand, which started in 1787, took inspiration from the name of one of these spa towns, Niederselters. Eventually, “seltzer” came to be a generic name for carbonated mineral water.
Source: Elemental