At pH 2.8 I would say you would be very lucky indeed to get a natural
MLF taking place. Even the cultures do not *guarantee* to work so low.
My suggestion is to leave it as you propose and then taste after a month
and see if you love it any more. It would be a shame to mess around with
something good that you might learn to like. And there is a place for
sharp ciders eg with food. Or you might sweeten it before drinking.
If you then decide that you really must drop the acid you can buy a
small MLF culture (Malocid) from Brouwland and see if that will do the
trick. But even at 15 - 20C it will take several months. There is no
guarantee that blending a bittersweet will help, though it might. With a
culture you will have a much greater chance of success because you know
for sure that you are introducing an inoculum.
In some ways you are being a bit hasty perhaps. It's only the beginning
of November. Traditional ciders do not undergo MLF till May or June -
hence it is sometimes known as the 'blossom fermentation'! That is
probably largely a temperature effect though.
Andrew
--
Wittenham Hill Cider Page
http://www.cider.org.uk
There is no "must" about anything in cider making. There are no rules,
only guidelines. "Whatever floats your boat...."!!
However it is generally recommended to rack off the primary lees within
a month or two of fermentation finishing, to avoid yeast death and
autolysis leaching back unpleasant flavours into the cider. But some
autolysis appears to be useful to allow ill-defined nutrients to leach
back to nourish the MLF bacteria (or you can add fresh tomato juice!).
In an earlier post I confessed to leaving ciders on the primary lees for
6 months or more, at a time in my life when I was rather busy and
otherwise distracted. It didn't seem to do any harm that i could
ascertain but I may just have been lucky. Certainly I would not plan to
do it nor recommend it in general.
>
> Could one imitate spring and force a MLF with ciders of a higher pH?
There are many factors. Temperature and pH are only two of them. Not
least is whether or not sufficient MLF bacteria are present, plus the
poorly understood growth factors. So, sure, a higher temperature and a
higher pH will tip the balance in your favour, but still cannot be
guaranteed. For instance, the ML bacteria may be transmitted by flying
insects which are more active in the spring - maybe some inoculation
occurs during spring racking? Maybe there really *is* a physical
connection with blossom?
Rather like wild yeasts, a lot seems to depend upon a local population
building up over time. For ciders (and some wines) racked into old oak
casks, the ML bacteria build up in the pores of the wood in succeeding
years and provide a virtually certainty that MLF will proceed if
temperature and pH requirements are met. For a 'clean' environment it's
more of a chance - did the right organisms drop in on the fruit or from
other sources such as fruit flies (Don't Discount Drosophila!)? You
can't tell. That's why winemakers now rely more on ML cultures just as
they do on cultured yeasts - it provides certainty and controllability.
As with the wild yeast story, it's a monoculture again and so tends to
be a bit one-dimensional. But if your goal is to drop the acid, cultures
work and they do the job. They may not confer any complex flavour
characteristics which the wild organisms do, but they won't give nasty
off-flavours either.
Am I sitting on the fence here? Yes. Because, apart from adding a
culture, I cannot say (a) do this, (b) do this and then (c) do this and
you will be guaranteed a wild malo-lactic fermentation. It ain't that
simple.
Rubbish. This idea has been discredited at Long Ashton over 50 years ago
- and also for grapes.
> But a spontaneous malolactic? This can really turn bad.
Hang on. Most traditional UK and French ciders (bittersweet / highish
pH) go malolactic spontaneously and it isn't always bad. That's where
the spicy flavours come from.
> Wouldn't know if
> cooling helps as it does for tartaric, but chalking certainly does, as
> does of course blending.
No cooling doesn't help in cider. Potassium and calcium malate are
soluble, potassium and calcium tartrate aren't. If you add chalk to
cider the calcium remains in solution and gives a chalky taste. You can
add potassium carbonate but again you get a salty taste if too much is
added.
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thanks Dries
--
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