More distillation also equals a higher alcohol content. For a liquor to officially count as vodka, it must be distilled to a whopping 95% alcohol by volume (ABV), but it's then diluted with water ...

That is the standard in the U.S.; however, there is overproof vodka that can get as high as 95%. Don't worry — you are unlikely to run into this in any typical liquor store. How much should your ...