"frederick ploegman" > wrote in message
...
>
> "World'sWorst" > wrote in message
> ...
> > Gosh - this does sound complicated!! CJJ Berry in his excellent book,
> > 'First Steps in Winemaking,' has done all the hard work for you!
> >
>
> Unfortunately, the formula that CJJ Berry gives in that book is_wrong_ !!
> It is one of the very few mistakes that Berry made. In the copy I have,
> if you look on page 78 in para 3 you will find "...Say you decide to make
> a wine of 12 per cent alcohol. The table shows that you will require an
> initial SG of 1.090,...". This is true. BUT - assume that this wine
> ferments
> dry with an end SG of 0.990, and then try to use the formula given at the
> bottom of that same page. His formula will_try_to tell you that you will
> get 13.58%ABV in that wine. Obviously a mistake. You can't have it
> both ways, it's one or the other !! HTMS

The point none of us have thought to mention is that it is alcohol by
VOLUME and alcohol has an entirely different specific gravity than water
does. It will go negative when it's dry, but that doesn't add to the
original PA reading.
I do so much better in the afternoon before I take my meds at night!
LOL!!!

>
> Frederick
>
>