On alcohol bottles, why do we put the percent of alcohol AND the proof percent on? Proof is always twice the other percent, so why label both?
In: Chemistry
In the old days when alcohol percentage in alcoholic beverages was not accurately measured and there was a lot of fraud sailors use to mix 50% drink %50 gunpowder and toss it on a match, if it sparked and exploded it meant that the drink was at least 50% alcohol or 100% proof that its not fraudulent.
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