"-plastic champaigne style corks are good or a bunch of crap for aging."
From what I've heard on the forums and what I heard from the man who taught me (he's been making mead for 15+ years) plastic corks are pretty much crap for long term aging. All of the best 60 year old wines tend to use natural cork and wax. So,when I want to age for over 2 years I use top quality #9 natural corks and wax the top of the bottle with beeswax.
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