Home Brew Forums > Home Brewing Beer > General Techniques > So what does oxidation taste like?
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Old 06-10-2010, 04:31 AM   #1
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Default So what does oxidation taste like?

I think I heard it tastes like wet cardboard? That's kind of what this tastes like.

Also, does it get worse with time?

I'm drinking my brown ale (which I was sure got oxidized because of a leaky auto-siphon) and it tastes funky.

Weird thing is, I tasted it at 1 week, and it was good. Again, at exactly 2 weeks, and even better.
Then, literally the next day I tried one more and I tasted it (the cardboard). Now, two days later and it's a little worse.

I got 2 cases of this stuff....


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Reason: typos
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Old 06-10-2010, 05:30 AM   #2
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Yep...sorry.

Add this site to your favorites:

http://www.winning-homebrew.com/off-flavors.html


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Old 06-10-2010, 06:36 AM   #3
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MMMM! Wet cardboard is good with some salt from what I've heard!LOL! On a serious note, try to get something from this expirence-no oxygen=no wet cardboard. I've had a few turn out similar to yours.
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Old 06-10-2010, 01:41 PM   #4
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Yeah, I know that oxygen = no good. Can't really help it though when your auto-siphon starts sucking air.

Oh well...
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Old 06-10-2010, 03:21 PM   #5
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I had a batch do that a while back. At 2 weeks great beers. At 3 weeks, YUCK! They were in half liter PET bottles so I tasted a few and all were that way. I popped the tops and swirled them until the foam reached the top and closed them back up. Within a day or two the funky taste disappeared.

I would try that before dumping them. I do not know why it worked, but it worked for my brew.

BTW: The beers were kept in the fridge the whole time.
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Old 06-10-2010, 10:51 PM   #6
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You know how old chips or crackers taste stale? Not just in texture but also they just have a 'flat' flavor to them?

I've had oxidation start out like that as it progressed to the 'wet cardboard' kind of taste.

A little zip-tie can help keep the hose from allowing air to come in at the top of the racking cane. if you had air in the auto-siphon bottom, you need to make sure its nice and wet going in, and usually a single forceful pump will prevent air pockets from getting formed initially.

I do find that using an auto-siphon its handy to have two people involved...one to hold the tubing and one to run the auto-siphon until its started and 'safe'.
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Old 06-10-2010, 10:56 PM   #7
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I sampled my last stir plate starter and thought it tasted of vinegar. I'm assuming it was massive oxidation that made it taste that way.. Dunno though..
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Old 06-10-2010, 10:57 PM   #8
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Hmmm the off flavors site points to bacterial infection for vinegar, but I fermented out a beer with that yeast and it tastes great, no off flavors at all.. hmm...
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Old 06-10-2010, 11:38 PM   #9
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I'd have to think the easiest way to taste oxidation would be to leave a glass of beer in open air for a number of hours and take a taste. Assuming there is enough air in the fridge it would keep it similar to a cold fresh sample, but you could also leave it out for hours or overnight. Ever smelled a beer glass from the previous day, spilled beer or old beer cans? Yuck! Not sure if there is more going on than oxidation. Maybe try stirring up a glass of beer considerably.
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Old 06-11-2010, 03:45 AM   #10
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I think I have an APA that did this, but took about three months. just tastes kinda stale and the hops really died. It's kegged, but i think that has to be what it is. I guess we just have to be anal about it and purge everything with CO2


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