>> wish to calculate the alcohol content.
> I think you need to have a measurement prior to fermentation
Actually there is another way by weighing a known volume, then evaporating
off the alcohol and weighing what's left. Comparing before and after
weights will give you the alcohol percentage, but I don't recall the
specifics. This thread is will probably be more fruitful on the mead lovers
list.
Aaron Morris - thinking better living through chemistry!