Proof is a term all alcoholics
are familiar with.

No self respecting drunk
would buy wine below 11%.

14.5% in a red, is a very fine
drop indeed.

With Guinness, at 5% one can make
up the shortfall by drinking more.

In the bread baking industry there is
such a thing as a " Proof Box ".

It is where yeast is put to confess,
and thus speed up activity.