[DBrow]

Not quite- even 40 proof will burn. The old proof system involved wetting blackpowder with the liquor, and lighting it on fire. If the powder ignited, that was proof of its strength. If it was below proof the evaporating water would keep the powder cool, and eventually the flame would go out.

[Still Thinking]

Interesting, I didn't know that. I almost added to my previous post that this test was performed by the "shire reef" from which we get "sheriff", but there is a (slight) limit to my nerdiness.

[freedomlover]

Not quite- even 40 proof will burn. The old proof system involved wetting blackpowder with the liquor, and lighting it on fire.

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Now there's a fine test standard.