In the bourbon world, few phrases whet an enthusiast’s appetite and get their juices flowing, like the term “barrel proof.” Whether a brand terms it “cask strength” or labels it “uncut,” what we all ...

Proof is a measure of the alcohol content of a beverage. In the U.S., policymakers define proof as twice the percentage of alcohol by volume (ABV). For example, a drink with 40% ABV is 80 proof.

The amount of alcohol in a distilled spirit — for instance, vodka or whiskey — is known as the ”proof.” Different countries have different standards for an alcoholic beverage’s proof. In the United ...