What's Inside Vodka

摘要

Vodka, by definition, is ethanol cut with water to at least 80 proof (40 percent purity). Despite its common sobriquet of "potato juice," it's actually pretty hard to make it from spuds-the tuber tends to produce more methanol (poison) than grain feedstocks, requiring additional distillation. More often, commercial vodkas are fermented and distilled from wheat, rye, or corn.