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weaselchew 01-23-2012 03:59 AM

"Accidental" hard apple cider (fermenting at cold temps)
 
We had an unopened half gallon of apple cider in the fridge. I've used this local orchard's cider to make hard cider in the past as it is very tasty, fresh and UV pasteurized only, but this one was just to drink as is (or was)

Well, it was forgotten behind some other containers for about a week, and yesterday my wife pulled it out of the fridge... it was much more round than before :p
I opened the lid (actually it blew off after getting most of the safety seal peeled off) and put an airlock on it. It's been happily bubbling away since. I was somewhat surprised that it was fermenting so vigorously in the 36F fridge. I suppose there's no [free or cheap] way of determining what yeast(s) are fermenting this?

Since putting the airlock on, it's been in a 59-60F room, but now I'm wondering if I should have left it in the 36F to see how it would have turned out.

Obviously I didn't get an OG reading since it was still sealed. I suppose I could guesstimate OG by picking up another bottle of fresh cider there and measuring it, although I'm sure batches vary quite a bit at this small local orchard.

LeBreton 01-23-2012 12:27 PM

I've found leaving a jug in the fridge to complete an 'accidental' fermentation results in a relatively sweeter and funkier tasting cider since it's outside of the yeast's comfort range.

Bringing it up to a more normal fermentation temperature should make those same yeasties complete a crisp tasting cider.

16onRockandRoll 01-24-2012 04:23 PM

Sorry for the newbie Q, but how did an unopened container ferment if it had been pasteurized?

DamageCT 01-24-2012 04:41 PM

Quote:

Originally Posted by 16onRockandRoll (Post 3701534)
Sorry for the newbie Q, but how did an unopened container ferment if it had been pasteurized?

I'm a bit confused as well...

LeBreton 01-24-2012 04:47 PM

Pasteurization does not kill the more vigorous yeasts strains

weaselchew 01-24-2012 05:56 PM

Quote:

Originally Posted by 16onRockandRoll (Post 3701534)
Sorry for the newbie Q, but how did an unopened container ferment if it had been pasteurized?

Quote:

Originally Posted by DamageCT (Post 3701626)
I'm a bit confused as well...

This cider is UV pasteurized, not heat pasteurized like a lot of commercial stuff. As far as I understand, UV is much more yeast-friendly than heat.

It also contains no preservatives, which is the bigger reason the wild yeasts were able to start fermentation.

weaselchew 01-24-2012 05:59 PM

Quote:

Originally Posted by LeBreton (Post 3696601)
I've found leaving a jug in the fridge to complete an 'accidental' fermentation results in a relatively sweeter and funkier tasting cider since it's outside of the yeast's comfort range.

Bringing it up to a more normal fermentation temperature should make those same yeasties complete a crisp tasting cider.

Thanks for this info, by the way. It will be interesting to see how it turns out, in either way it results.

lilschmutz 01-24-2012 06:05 PM

I have the exact same thing happening to me in my fridge. It's a gallon of UV pasteurized cider from an orchard that's only been in there for about a week but its fermenting away. It must have been in the cooler at the grocery store for a while before I bought it. I wanted to make some hard caramel apple cider with it. It wouldnt be a problem to add some more yeast to it and pull it out of the fridge right? It's got some floaties on the top and its bulged out a bit from the pressure.

kc9eci 01-25-2012 12:16 AM

Got my hands on a fruit press when I was in high school 82 or 83 or so. Picked a bunch of apples off a tree on our property and pressed them. Put the juice in those quart jars with the locking lids. Sort of like a wide mouth Grolsch bottle. One managed to get pushed to the back of the fridge on the bottle shelf. Out of sight is out of mind. At some point a few months later as the fridge was being cleaned, the cider in the jar was discovered. It was all fizzy and good tasting. Sometimes you have to love those accidental fermentations.

lyle1 06-10-2012 02:42 PM

Help. New to this. Real new. How will this approach turn out? One thing for sure, I'm committed now!
I bought 2 martinellis unfiltered apple juice pasturized in 50.7 oz. glass containers. drank a bit off each one for space and put a 1/4 oz package ( 7 grams) of redstar baking yeast in each one and a heavy duty punch ball baloon on each one for air locks. Lettin em sit at room temp. they are doin their thing and now I need to know what next?


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