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Old 10-04-2012, 12:27 AM   #1
ylpaul2000
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Default Natural Fermentation?

So I made an American wheat last Sunday morning and accidentally forgot the yeast
(meaning I didn't have any on hand and my LHBS was closed). I wasn't able to get to the store since and tonight when I checked the wort in the carboy it had erupted an was going to town! It look clean so far but smells really sulfuric, should I dump it or wait to see what happens? Any advice would be great.

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Old 10-04-2012, 12:39 AM   #2
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Wait and see. People made beer long before they discovered that yeast was a necessary ingredient.

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Old 10-04-2012, 04:09 AM   #3
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Quote:
Originally Posted by ylpaul2000
So I made an American wheat last Sunday morning and accidentally forgot the yeast
(meaning I didn't have any on hand and my LHBS was closed). I wasn't able to get to the store since and tonight when I checked the wort in the carboy it had erupted an was going to town! It look clean so far but smells really sulfuric, should I dump it or wait to see what happens? Any advice would be great.
Wait it out! See what nature brews!
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Old 10-04-2012, 12:37 PM   #4
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Some commercially available yeasts put out a sulfurous odor so don't dump it just because of that factor.

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Old 10-04-2012, 01:29 PM   #5
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It's beyond the commercial sulfur smell. It smells like someone lit a couple of matches inside the carboy!

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Old 10-04-2012, 02:28 PM   #6
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Ride it out and post pictures. Try lagering if the sulphur smell continues.

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Old 10-04-2012, 05:33 PM   #7
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It may turn out great, or it may be awful. What's clear is that you need to sanitize your equipment better in the future.

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Old 10-04-2012, 05:55 PM   #8
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Quote:
Originally Posted by kingwood-kid
It may turn out great, or it may be awful. What's clear is that you need to sanitize your equipment better in the future.
Well I'm I don't think that it has to do with poor sanitation. I would challenge any of you to leave wort at room temperature for a period of time and see what happens. Jamil Z. Did a podcast on this topic and he said he regularly tests the cleanliness of his system this way.
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Old 10-04-2012, 06:01 PM   #9
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Let her ride and see what you get.

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Old 10-04-2012, 07:11 PM   #10
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Lager yeast is very sulfuric, what did you brew last in that carboy?

You likely got some wild yeast and some bacteria.
Don't taste it until it runs its course, bacteria can be dangerous.
Once the yeast take over, drop the PH, and raise the alcohol level the bacteria will settle down or die out.
Be prepared to let this sit for several months, wild yeast does not attenuate very well.
BYO and Brewers TV have done some interesting specials on spontaneous fermentation that you may want to take a look at.
It will turn out very different than what is intended but I would stick with it... for science!
If it turns out well, save a sample of the yeast for future use.

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