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Author Topic: ABV vs Proof  (Read 1825 times)

Offline siasl

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ABV vs Proof
« on: 21 June, 2012, 08:33:33 AM »
What's "Proof" all about, then? Alcohol By Volume is simple to understand, but "proof" numbers seem to have no bearing to anything.

Offline antonymous

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Re: ABV vs Proof
« Reply #1 on: 21 June, 2012, 10:29:59 AM »
It is a very quaint way of expressing the amount of alcohol in a mixture, now obsolete.
Basically - to prove that the rum being dispensed to jolly jack tars was not watered down some gunpowder would be added to the liquid and if it(the gunpowder) could be ignited ok it was deemed to be proof spirit (ie 100o) This equates to just over 57% alcohol by volume. (ABV).
Anything less would not support ignition and would result in the Ship's Purser swinging from a yard arm.
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