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-   -   To cover or not to cover? (http://www.homebrewtalk.com/f39/cover-not-cover-102052/)

jcole 02-06-2009 08:30 PM

To cover or not to cover?
I remember reading somewhere that you should never cover the pot when boiling wort.

Is this true? Does anyone know why this is?

ShortSnoutBrewing 02-06-2009 08:34 PM

DO NOT COVER. Take a gander at this: Dimethyl sulfides - Home Brewing Wiki

MaxPower49 02-06-2009 08:35 PM

I believe you are supposed to leave it uncovered so that the DMS (or something like that) will boil off and not cause any off flavors. I don't think it is as big of a deal when you are using extract, but it is still a good idea to leave the lid off.

GilaMinumBeer 02-06-2009 08:37 PM

You can cover while the wort is coming to a boil. Some cover partially while boiling.

Covering while boiling causes compunds that form DMS, Di-Methyl Sulfide togo back into the wort thus causing off-flavors.

jcole 02-06-2009 08:49 PM

Interesting.. Thanks guys.

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