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General Category => General Homebrew Discussion => Topic started by: cytorunner on March 23, 2011, 01:43:14 AM

Title: Plastic off flavor in Wheat beer?
Post by: cytorunner on March 23, 2011, 01:43:14 AM
I brewed an American Wheat beer a few weeks ago and it seems to have a plastic flavor.  I was wondering if this is function of the wheat yeast or a sanitation problem?  I've brewed a few batches and al of the rest don't seem to have this problem.  Any thoughts or advise would be great.
Title: Re: Plastic off flavor in Wheat beer?
Post by: Hokerer on March 23, 2011, 01:53:11 AM
Do you sanitize with bleach?  The slightest trace of the least amount of bleach remaining on any of your bits and pieces can lead to development of chlorophenols whose taste is described as "band aid" or "plasticy"
Title: Re: Plastic off flavor in Wheat beer?
Post by: cytorunner on March 23, 2011, 02:04:56 AM
I do not sanitize with bleach but I use tap water when I brew.
Title: Re: Plastic off flavor in Wheat beer?
Post by: Thirsty_Monk on March 23, 2011, 02:16:24 AM
What yeast did you use.
Some yeast can create "plastic" taste.
There was a session about it on lase NHC.
Title: Re: Plastic off flavor in Wheat beer?
Post by: cytorunner on March 23, 2011, 02:17:50 AM
is there anyway to clear the chlorine without a systemic water filter?
Title: Re: Plastic off flavor in Wheat beer?
Post by: cytorunner on March 23, 2011, 02:20:46 AM
What yeast did you use.
Some yeast can create "plastic" taste.
There was a session about it on lase NHC.

I used Wyeast 1010 American Wheat
Title: Re: Plastic off flavor in Wheat beer?
Post by: Thirsty_Monk on March 23, 2011, 02:24:52 AM
Talk was more about Belgian and Hefe yeasts.
Chlorine will valitalize (big word) with boil. Chloramine can be removed with Charcoal filter.
Title: Re: Plastic off flavor in Wheat beer?
Post by: Hokerer on March 23, 2011, 02:49:24 AM
is there anyway to clear the chlorine without a systemic water filter?

Simplest way is Campden tablets.  One quarter tablet per 5 gallons instantly gets rid of all chlorine and chloramines.

Campden Tablets (http://www.northernbrewer.com/default/campden-tablets.html)
Title: Re: Plastic off flavor in Wheat beer?
Post by: cytorunner on March 23, 2011, 03:38:05 AM
cool thanks for the advise
Title: Re: Plastic off flavor in Wheat beer?
Post by: denny on March 23, 2011, 03:17:30 PM
is there anyway to clear the chlorine without a systemic water filter?

A few ways.  If it's chlorine, not chloramine, you can simply draw the water the day before and let it sit uncovered overnight .  Or you can boil it.  The fast, easy way, which works for both chlorine and chloramine, is to use campden tablets.  One crushed tab added to 20 gal. of water will remove chlorine or chloramine almost instantly.
Title: Re: Plastic off flavor in Wheat beer?
Post by: majorvices on March 23, 2011, 04:58:32 PM
What's wrong with Carbon filtration? I run mine through a filter and have had it tested and there is no chlorine in water (I do double filter).
Title: Re: Plastic off flavor in Wheat beer?
Post by: denny on March 23, 2011, 05:00:33 PM
What's wrong with Carbon filtration? I run mine through a filter and have had it tested and there is no chlorine in water (I do double filter).

Absolutely nothing wrong with it if you have one.
Title: Re: Plastic off flavor in Wheat beer?
Post by: Hokerer on March 23, 2011, 05:46:42 PM
What's wrong with Carbon filtration? I run mine through a filter and have had it tested and there is no chlorine in water (I do double filter).

As I understand it, carbon filtration will work for chlorine but it's a little more tricky for chloramines.  Carbon filtration will remove chloramines but only if the contact time with the carbon is long enough.  Most of us can't/won't run the water through the filter slowly enough to do that.  If your water supply uses chloramines, it sounds like your double filtering is meeting that contact time requirement.
Title: Re: Plastic off flavor in Wheat beer?
Post by: majorvices on March 23, 2011, 05:52:47 PM
Mine doesn't use chloramines, but from my understanding filtration takes care of about 90% of chlorine or chloramines depending how slow you run the water through. Double filtering takes it down to negligible levels (but, IMO, 90% is probably negligible as well. Never noticed off flavors even from single filter.)