It's true! At least in the united states all alcohol for human consumption must be slightly radioactive. You see, the law requires that alcohol for human consumption must be made from fruits and grains, but you can also make alcohol from petroleum. (Oh don't go eww, vanillin (artificial vanilla) is made from petroleum too.) So the question is how can you tell which is which?
Now purefication is good enough that you couldn't tell from chemical analysis, but fresh (as in less than a few thousand years old) plant matter has significant amounts of Carbon-14 in it which is radioactive. By contrast, fossile fuels are millions of years old and all of the carbon-14 has decayed out. So if your alcohol is radioactive, it is made from grains and fruits, if it is not it is made from petroleum.
Just one of the many facts I learned in "Physics for Future Presidents" which I'll review soon.
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