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Old 10-05-2012, 01:11 AM   #1
wgonfan
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Default rubber stopper causing off flavors?

I've brewed a couple of austin home brews 1gal kits to add variety to my 5 gal pipeline. at bottling they all have smelled just like that rubber stopper that comes with the kit. I wrote it off assuming that it would fade quickly once they were in the bottles and carbing up. Today I opened my first one from 3 weeks back & it still has that rubber stopper smell & a small off flavor that I can only describe as "rubber stopper". The beer (a porter that I added a tiny bit of peated malt to) is great otherwise. It may all just be in my head but I was wondering if anyone else who is using these stoppers have noticed anything similar.

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Old 10-05-2012, 01:16 AM   #2
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What are your fermentation temps?

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Old 10-05-2012, 01:16 AM   #3
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Unless your stopper was made from an old Goodyear radial it's not the problem.

http://www.howtobrew.com/section4/chapter21-2.html

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Old 10-05-2012, 01:28 AM   #4
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ferm temps between 62-68 inside the fermenter. using muntons gold, notingham & windsor. I strongly suspect its from the stopper because it smells exactly like the stopper does and it's been like that in 3 batches and the odor has beenl noticeable at bottling.

The stoppers are "fermenthause" brand.

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Old 10-05-2012, 01:56 AM   #5
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Is the stopper black rubber or white latex looking type ?
I think the black rubber ones would leave a taste , test
it by boiling it in distilled water and let it cool then taste
the water, you'll know for sure then.

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Old 10-05-2012, 02:21 AM   #6
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Quote:
Originally Posted by overdbus View Post
Is the stopper black rubber or white latex looking type ?
I think the black rubber ones would leave a taste , test
it by boiling it in distilled water and let it cool then taste
the water, you'll know for sure then.
Yellowish white. I like the idea of boiling one & will try that this weekend. I don't think the flavor is come from wort contact with the stopper but just the strong aroma being inclosed in the fermenter. Like I said, could all be in my head, but those stopper have a strong odor.
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