Spontaneous fermentation with the yeast that reside on the surface of
the cherries. The same occurs with grapes as you point out (and
everything exposed to air).
This is risky since bacteria are also present and you are relying on
the yeast outgrowing the bacteria. Once the yeast take hold, the pH
drops and makes the environment less hospitable to mold and bacteria
(except a few acid loving bacteria like lacto and aceto).
--- In Distillers@yahoogroups.com, Toni Smith <tonimarie@...> wrote:
> hi Andrew
> the only way that could happen i think is if they left it open to
> air for a bit so it took in some of the natural yeasts from the
> know some sourdough bread makers who have started their sourdough
> starters in this way. grapes also seem to attract natural yeasts
> the air and maybe cherries do as well. don't quote me on the last
> but the first 2 i have come across.
> Andrew wrote:
> > There stuff was much purer and better
> > for you because they would just macerate
> > the cherries (without taking out seeds)
> > and then let it ferment. Apparently one
> > of the things that makes it purer is that
> > they didn't add any chemicals that are
> > bad for you - like yeast :S