Foam when i opened a 7 year old wine.

harrymanback92 · Aug 2, 2012

I opened a 7 year old Cabernet Sauvignon called Cover Dive tonight and when I opened it it seemed to "foam". To me, it tastes good. My girlfriend can't detect anything wrong with it, but I've never seen this before. Is it spoiled?

bottlebomber · Aug 2, 2012

Nope not spoiled just slightly carbonated. That's considered a serious flaw in winemaking.

amandabab · Aug 2, 2012

If you open it with friends ~shrug~ it wasn't your your best batch, oh well it tastes good.

The tasting club will tear you a new one.

harrymanback92 · Aug 2, 2012

Well to be clear this is not made by me. It's a wine called The Cover Dive from South Australia. I had one bottle of this a year ago and thought it was delicious. Now it's seven years old, and it does this when the bottles are open.

It's a 2005 Cabernet from South Australia. Is it spoiling or just residual c02?

amandabab · Aug 2, 2012

it wasn't stabilized properly and fermented in the bottle.
7 years and it didn't pop a cork, so they almost did a good job.

harrymanback92 · Aug 2, 2012

Gotcha. The foam has subsided after about two hours, I assume it's fine to drink, the flavor is fine by me, just wasn't sure if it was spoiling or what was going on.

Thanks for the prompt responses!

Heavywalker · Aug 2, 2012

If it tastes good it is not spoiled! You will know when you drink a wine that has gone bad.

bk0 · Aug 2, 2012

Probably underwent some temperature swings over those 7 years. That will cause the pressure within the bottle to fluctuate, causing some air to go into solution. When you pop the cork the pressure equilibrates to atmospheric pressure and the air comes out of solution as a small amount of foam.

But yeah, I'm sure it's fine.

Foam when i opened a 7 year old wine.

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Foam when i opened a 7 year old wine.

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