I work at a restaurant that seats around 100 guests and I do wine pairings with our tasting menu that changes every two weeks. However, we don't sell enough wine pairings in those two weeks to guarantee that the guest is getting a fresh wine every time. To prevent the wine from spoiling I use a Coravin that fills the void in the bottle with an inert argon gas. In your opinion, do you feel this alters the integrity of the wine in any way?
I am a heavy Coravin user. The system is pretty good, but it's far from perfect. Here is what I've found so far:
-You should purge the needle with gas after every use.
-Wash the needle at least dialy, or after every use if you have the time. Wine gets oxidized and that smells bad.
-If the cork is cold, (below 15º C) it will loose elasticity, so when you use the Coravin and retract the needle, it will leak and oxygen will get into the bottle. You can do these things to avoid it:
Once the needle is removed put the bottle upside down and if the cork leaks, game over.