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Proof Used to Measure Alcohol

When alcohol business arrived in the United States, Americans uniquely approached the measuring system

When alcohol business arrived in the United States, Americans uniquely approached the measuring system

If you purchase a bottle of vodka from your local liquor store, you will most likely see two different numbers indicating the amount of liquor that it contains. The front is alcohol by volume (ABV) percentage, which is quite simple to understand: it represents the proportion of alcohol in the total liquid and is relatively consistent globally.

The alternative measurement is proof, which is a measure of alcohol concentration that varies by nation. The proof measurement dates back to 16th-century England when the government levied an additional tax on “proof spirits,” or liquor containing a specific alcohol percentage. The term “proof” refers to demonstrating that something is true or correct. The English administration would examine the amount of alcohol in liquor by dipping a gun pellet and setting fire to the wet bullet.

If the damp gunpowder could be ignited, the drink was deemed a proof spirit and taxed more heavily. This method of proving had a flaw: the flammability of the liquor was temperature dependant. This procedure for evaluating proof spirit was inaccurate since the temperature was not kept constant. England solved this difficulty in 1816 by standardizing its proof spirit threshold. A proof spirit was now defined as a liquor with an alcohol content of 1213 the weight of an equal amount of purified water at 11 °C (51 °F).

This specific gravity is equivalent to around 57.06 percent ABV. This standardization was included in the United Kingdom’s Customs and Excise Tax in 1952. England made the proofing procedure a little perplexing. When the alcohol business arrived in the United States, Americans uniquely approached the measuring system. In the United States, the proof of liquor is two times the ABV. This indicates that a beverage with a 30% ABV is 60 proof. A “proof spirit” must have a proof level of at least 100.

This article is curated by Prittle Prattle News.

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