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Old 09-15-2011, 04:12 PM   #1
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Default Beer tastes like plastic

I just finished dry-hopping a Two-Hearted Ale clone, and it tastes like plastic. I had to leave this in the primary about three weeks longer than needed, beacuse I was out of town and SWMBO was just not gonna rack it for me. I didn’t see or smell any type of infection, but I do ferment in Better Bottles. Will time save my beer?

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Old 09-15-2011, 04:33 PM   #2
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Here is what causes that off flavor / aroma
Generally they probably will not get better if it was caused by issues with chlorine residues in the water.

PHENOLIC

CHARACTERISTICS: A hospital-medicine chest flavor and aroma, best detected by its aroma components; caused by phenols. Some phenolic tastes are desired depending on the style. Other descriptions include Band-Aid-like, plasticlike, smoky, clovelike.

HIGH LEVELS DUE TO PROCESS: Yeast strain; chlorophenols in the water; improper rinse of chlorine sanitizers; oversparging; sparging above pH 6.0; sparging above 170 degrees; wild yeast contamination.

LOW LEVELS DUE TO PROCESS: Charcoal filtering of tap water; good healthy yeast strain; proper sparging while monitoring temperature and pH, good rinse of sanitizers or use of non-chlorine sanitizers.

EXAMPLES: Wheat beers have a high amount of the phenol 4-vinyl guaiacol that gives the characteristic clove taste.

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Old 09-15-2011, 05:03 PM   #3
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Do you think you had any chlorine in your water? Sanitize with bleach?

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Old 09-15-2011, 05:07 PM   #4
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This is the same water that I've used for all of my brews. An I use starsan.

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Old 09-15-2011, 06:15 PM   #5
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I'm having a similar issue with a Strawberry Wheat beer I did months ago. Has a strong plastic/rubber flavor on top of a lot more tartness than I was hoping for from the strawberries. It's been in bottles for a couple months now and it's still not really drinkable.

Still not sure what went wrong, but I guess some wild yeast from the strawberries is most likely? This was an extract brew so no sparging issues. I use bottled water and iodophor so I'm guessing no chlorine either but I guess you never know with bottled water?

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Old 09-16-2011, 12:52 AM   #6
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1. do you have a water report?

2. did you stress the yeast in any way?

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Old 09-16-2011, 12:57 AM   #7
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Quote:
Originally Posted by Jwood
1. do you have a water report?

2. did you stress the yeast in any way?
1. No
2. It's likely. Don't recall exactly.
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Old 09-16-2011, 02:09 AM   #8
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did you get white bubbles on top of the wort? is there that plastic in the aroma also? i've had that before, i think its a form of infection

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Old 09-16-2011, 02:27 AM   #9
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I had this too, though I chalked it up to using my carboy that previously held my sanitizer solution and not rinsing it out thoroughly enough (though I did rinse it about 10x).

Tried ice concentrating it in hopes that it would leave the nasty phenol flavour behind... Concentrating all flavours...

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