'proof' on Serious Eats

Cocktail 101: Let's Talk Proof

When someone talks about the proof of a spirit or liqueur, what's that person talking about? The proof of a spirit is measured by taking the percentage of volume of alcohol in the spirit, and doubling it. So a spirit with 44% alcohol by volume (or ABV) is an 88-proof spirit. Why does proof matter? Read on, friends. More

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