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Old 05-30-2011, 12:54 AM   #1
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Default Soapy taste

I just took a gravity reading and tasted my sample. It has a soapy after taste. Star-San maybe?


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Old 05-30-2011, 01:23 AM   #2
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Star San does not leave a soapy taste, short of pouring a lot into your beer. That's why it's called a no rinse sanitizer. There are other off flavors that will cause that. Or, if you used dish soap in your brewing equipment and don't rinse it well enough it can leave a soapy residue which will leave a soapy flavor. To nail down what caused it, we will need to know your recipe and procedures. The more detail, the better.


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Old 05-30-2011, 01:23 AM   #3
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Quote:
Originally Posted by Mdessert View Post
I just took a gravity reading and tasted my sample. It has a soapy after taste. Star-San maybe?
I doubt it's Star-San.

Check out the soap section in the off flavors here: http://www.howtobrew.com/section4/chapter21-2.html

Or check out the similar thread here: http://www.homebrewtalk.com/f11/star...d-taste-56650/
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Old 05-30-2011, 01:30 AM   #4
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Default Soapy taste

I just took a gravity reading and tasted my sample. It has a soapy after taste. Star-San maybe?-
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Old 05-30-2011, 01:37 AM   #5
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Star-San shouldn't give you any soapy flavors. Need to know a little more about your process and the stuff you use to clean your brewing equipment to have a better idea.
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Old 05-30-2011, 02:14 AM   #6
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One of the things that can cause a soapy taste in beer (besides soap in cleaning the equipment!) is from the breakdown of yeast byproducts. There are fats/lipids in there, and if you remember your chemistry, saponification of lipids = soap.

In other words, if you got a bit warm during or after fermentation, the lipids could saponify, literally making soap. You could really be tasting soap from the breakdown of fatty acids.
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Old 05-30-2011, 02:43 AM   #7
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I remember way back when I was just getting into the hobby, fermented a light lager at room temperature. Had a soapy taste.
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Old 05-30-2011, 02:54 AM   #8
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It definitely got warm at the end of my fermentation. Anything I can do?
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Old 05-30-2011, 01:40 PM   #9
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It definitely got warm at the end of my fermentation. Anything I can do?
No, I don't think so. Once it starts to breakdown, I don't think it will improve.

I know that lots of brewers are doing much longer primaries with good results but I think that this is a risk when fermenting too warm. I would think that the brewers that are talking up a month-long primary probably have very good temperature control.

I usually leave a beer in the fermenter for 2 weeks or so, at optimum fermentation temperatures. A too-warm fermentation or being too warm after fermentation can encourage some of these off-flavors (like soap).
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Old 05-30-2011, 05:23 PM   #10
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Some of my friends who aren't into hoppy beers perceive the hops as a soapy taste.


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