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Home Brew Forums > Home Brewing Beer > Fermentation & Yeast > white trashbags ruin beer?
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Old 02-26-2011, 04:56 AM   #11
ultravista
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I just don't see how a cover, over a glass carboy, could affect the flavor of the beer inside a sealed container.

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Old 02-26-2011, 05:01 AM   #12
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Have you ever tried skunked beer?

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Old 02-26-2011, 05:16 AM   #13
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Quote:
Originally Posted by ultravista View Post
I just don't see how a cover, over a glass carboy, could affect the flavor of the beer inside a sealed container.
if light can pass thru into the beer, it can harm the beer. a white plastic trash bag isn't exactly the best cover. if you put your head in a white plastic trash bag (please don't do this, just imagine it), you can most definitely see light. So if you can see light, so can the beer, which isn't a great thing.

OP, if you want to use trash bags, just stick to the 20 mil contractor yard bags. u could tie the carboy up in that and ferment it outside if you wanted to, no light's gonna get thru that. (don't ferment outside, i was just using it as an example).
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Old 02-26-2011, 12:10 PM   #14
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I've always covered all my carboy's in black plastic yard bags, as McMalty suggests. I lager beer under my house and there's an occasional fungus problem down there when the snow melts, so it's a second line of defense against spores and dust. Never had a problem. Lots of light can pass through a white bag and skunk your beer as others have pointed out, hence the prevalence of brown beer bottles.

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Old 02-26-2011, 03:46 PM   #15
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So Opherman47, you left your fermenting carboys sitting in sunlight and covered with a white garbage bag?

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