Alcohol proof

Measurement of alcohol content in beverages

Alcohol proof is a measure of the content of ethanol (alcohol) in an alcoholic beverage. The term was originally used in England and was equal to about 1.821 times the alcohol by volume (ABV) number. The term is now used in different ways in different countries.

History

The concept of alcohol proof dates back to the 16th century in England, where it was used to describe the strength of spirits. The term "proof" originated from the practice of "proving" the potency of a spirit by mixing it with gunpowder and attempting to ignite it. If the mixture ignited, the spirit was considered "above proof" and if not, it was "under proof."

Modern definitions

In the United States, alcohol proof is defined as twice the percentage of ABV. For example, a beverage that is 50% ABV is 100 proof. In the United Kingdom, the proof system was historically different, but the UK now uses the ABV system.

Measurement

The measurement of alcohol proof is important for taxation, regulation, and consumer information. Different countries have different standards for what constitutes "proof," and these standards can affect the labeling and sale of alcoholic beverages.

Applications

Alcohol proof is used in the distillation industry to ensure the quality and consistency of products. It is also used by consumers to gauge the strength of a beverage and make informed choices about consumption.

Related pages

• Alcohol by volume
• Distillation
• Ethanol
• Alcoholic beverage

Gallery

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  A bottle of Bacardi 151, a high-proof rum.