I think attempting to pour molten metal through boiling alcohol
might at least void your home fire insurance policy.
The Satsuo Ando type of oxygen free ingot casting as I learned
it, is through an inch of boiling water. Dangerous enough if you
are trying to pour a six or seven ounces ingot. Alcohol usually
does not explode but it Do burn.
In my opinion: DON’T TRY IT.
Bill in Vista