MindMuse
Posts: 4327
Joined: 5/20/2009 From: Talking Rock, Georgia Status: offline
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quote:
ORIGINAL: jhcolman i'm in the same position as Budh. So I'd really love this to work. I just do not understand one thing. My local retailer (LCBO) has an argon wine bar. The wine bottles are opened and re-stoppered and any wine removed is replaced with argon under some degree of pressure. Yet these wines change and eventually die over the course of a couple of weeks. I have had many disappointing tastings of wines that were on their way out from that bar. And I've read that these argon bars are meant for the short term preservation of wine. Both this system and the Coravin apparently cover the wine with argon. So how /why is Coravin different? Why does it work and a standard argon bar not? I must be missing something here. Can anyone shed some light on my darkness? This is the key difference. Once a bottle is opened the bad Genie is in the bottle for good. The wine is exposed to oxygen, and even if argon or some other mix of inert gases are squirted in, you're still going to trigger some level of interaction with the O2. Plus, the popular notion that the heavier inert gases "blanket" the wine and keep the oxygen layered above an inert layer apparently just is not true. The gases do mix and balance out a concentration and oxygen will still interact with the wine, though in lesser concentration than if the inert gas was not also present. One would assume that the more effectively you can evacuate air when replacing with inert gas the better effect. I think this is why Private Reserve gives some fairly specific instructions on shooting in their gas. The Coravin presumably does not ever allow that ingress of oxygen, though I suspect that some bit of oxygen, residual in the needle cannula e.g., may well make its way in.
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... she uncorked it and put it to her lips. "I know something interesting is sure to happen," she said to herself, "whenever I eat or drink anything; so I'll just see what this bottle does." - Alice's Adventures in Wonderland
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