Re-harvesting the yeast from the trub or lees of a fermentation may be
done sucessfully if used soon after the first fermentation has finished
or if it is refridgerated soon after the fermentation completes. I have
used this method up to 20 times with EC-1118 yeast when I was
experimenting with the JEM sugar wash.
In Rum making and doing Sour Mashing for corn whiskey, this is pretty
common practice also. Rum makers make use of this "Dunder" as they call
it from both the fermenter trub and also re-add the backset from the
distillations into new fermentations. Sour mashing uses the same
While I have never used that particular brand of Liquor Quik Distillers
yeast, It should be fine to reuse in the same manner. However, due the
yeast cells mutating after many re-harvests, I have read sources that
recommend not re-harvesting yeast more then 10 times without adding new
--- In Distillers@yahoogroups.com, "Pete H" <thursty2@...> wrote:
> Yeast "cake"?
> I have recently, for the very first time used the "slush" remaining in
2 of my fermenters after draining the dextrose and water wash for
boiling. The yeast used in both washes was SS Classic. The slush that
remained was certainly not a "cake". Just a little wash and a pinkish
white milk-like substance.
> I collected 750ml from one fermenter and a litre from the 2nd,
although more careful collection could have seen a litre from each.
> I mixed up a new batch of dextrose and water and added the 750ml of
slush. The fermentation started a day later and all but stopped about 2
days later. Hydrometer readings were still high, so I added the litre of
slush. The fermentation was still going 4 days later and is now almost
> I'm excited by the prospect of being able to re-use the yeast remains
successfully, but am not yet confident as to what quantities are
> --- In Distillers@yahoogroups.com, Jonathan Rice jonwrice@ wrote:
> > Hello all,
> > I'm new to this fine art and this is my first post.
> > I've been a home brewer for several years and am just getting into
> > distillation. I'm wondering about re using the yeast cake from the
> > my fermenter. I've done this a few times with beer with good
> > I'm currently using liquor quick super express (sp?) distillers
> > make a rum like substance. I would use yeast nutrients if I did
> > I also wouldn't re use the cake more than once or twice.
> > Thoughts?
> > Cheers!
> > Jon