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Old 01-02-2011, 12:54 AM   #1
Celestyal
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Default Degassing

What is the purpose of degassing a wine? To prevent bottle bombs?

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Old 01-02-2011, 01:05 AM   #2
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Well that can be one reason. Also alot of off favors come from not tastes but slight smells. Degassing removes some of those.

I made a batch of blueberry wine recently and bottled it too soon and it started fermenting again in the bottles. Luckily I used beer bottles so I just cracked the tops and let them degass some then clamped the caps back.

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Old 01-02-2011, 03:07 AM   #3
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Most wines are still, that is not sparkling. Once a wine is finished fermenting, there is still some co2 in it but since it's not fermenting, it's not forceful enough to push co2 out the airlock. So, some co2 is trapped inside the carboy. Usually time takes care of it, especially if the wine has undergone several rackings.

Sometimes, though, the wine still has some co2 in it. This is common in kit wines, which rush you to bottle. Or in cooler fermentations, the wine "holds" onto the co2 more than in a warmer area.

Because a fizzy wine that is supposed to be still is unpleasant, the wine is degassed if it's fizzy. That's the only reason for degassing, and it's only done if necessary. It's usually not necessary.

Degassing doesn't have anything to do with bottle bombs- bottling too early is the cause of bottle bombs.

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Old 01-02-2011, 04:10 PM   #4
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Thanks Yooper!

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Old 01-04-2011, 02:41 AM   #5
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CO2 dissolved in water is carbonic acid. Many wines don't need more acid, and carbonic acid isn't one of the acids deemed desirable in a still wine. If you enter a wine into competition and it's gassy, you'll lose points. Only Sparkling wines would score points for the fizz.

CO2 can also make your wine difficult to clear. Still wines tend to drop their sediment quicker.

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