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Old 11-03-2009, 06:20 AM   #1
Nov 2009
Oxford, MS
Posts: 7

so i just started brewing cider. i began my first brew yesterday, and after pitching the yeast, i noticed a very active fermentation occurring. however, when i got home from work today, the carboy was emitting a very strong, and rather disagreeable smell. when i sniff up close to the carboy, i can still smell the cider, and the yeast. but in general, it's a strange smell. can anyone relate to this? and if so, what is the problem? or is it a problem?

i used very fresh cider for this brew. (the apples came off the trees less than a month ago.) could this be contributing to the problem?

thanks for any help!

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Old 11-03-2009, 06:25 AM   #2
Oct 2007
Missoula, MT
Posts: 91

Smells somewhat sulfuric/rotten egg-like? Probably "rhino farts" as they are called which is perfectly normal (albeit unpleasant) for cider. It should go away with time.

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Old 11-03-2009, 06:58 AM   #3
Beer Gnome
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Sep 2009
Virginia Beach, VA
Posts: 2,973
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It could be the yeast you use. I haven't had any rhino farts yet.

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Old 11-03-2009, 01:20 PM   #4

Give it a gentle stir several times a day. Also, it could mean the yeast need nourishment. Got any Fermaid-K or yeast hulls?
Mead Lane Brewing
The liver is evil and must be punished

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Old 11-03-2009, 03:12 PM   #5
Oct 2007
Charlottesville, VA
Posts: 1,334
Liked 156 Times on 65 Posts

try to lower your fermentation temps to slow the ferment down

what you are smelling is a stressed ferment. You could add nutrients, but that will make it difficult to stop the ferment with any residual sweetness

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