If you've ever looked at the label on a bottle of liquor, you've probably seen both the ABV (alcohol by volume ... if the mixture burned, it was "proof" of high alcohol content.

The amount of alcohol ... s proof on its label. Manufacturers who do wish to include the proof must adhere to set standards. The proof system was devised to measure the alcohol content of high ...

As any high schooler who has incisively compared bottles in his or her parents' liquor cabinet can tell you, a spirit's proof is exactly twice as much as its percentage of alcohol by volume.

Alcohol companies ... wine on the label. "Light" beers must list calorie and carbohydrate content only. Liquor must list alcohol content by volume and may also list proof, a measure of alcoholic ...

Proof is an equation that even someone like me, who earned a C- in remedial math, can do: Double the number listed as the alcohol by volume on the ... experience with high-proof spirits.

WASHINGTON — Alcoholic beverages soon could have nutritional labels like those ... Liquor must list alcohol content by volume and may also list proof, a measure of alcoholic strength.

WASHINGTON -- Alcoholic beverages soon could have nutritional labels like those ... Liquor must list alcohol content by volume and may also list proof, a measure of alcoholic strength.

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.