So are preservatives truly needed? Really trying to avoid using sulfites.
Sulphites are anti fungal, anti oxidant etc. They're produced naturally during ferment anyway, we just add them at a slightly higher level to have a certain amount of preservative effect..
They should only be used at levels where they have that effect and no higher so as not to cause flavour issues.
The "contains sulphites" warning is mostly arse covering by the producers. Sulphur being a natural substance, doesn't cause issues generally, the warning is about asthmatics and older people who have breathing problems.....
They get worse exposure from cleaning materials.......
Of course, it maybe just me that doesn't follow what I think of as irrational worrying.....
You can always just make stronger batches or fortify it. Alcohol at high enough levels is a preservative anyway. Wine strength and above usually works, just can take longer to age/mellow.....
Just my tuppence worth.....
...so... I had a bottle from my first batch of traditional (2004) recently. It had been corked for a couple of months. Then I found out it was still fermenting (early newbee mistake), uncorked it, put a piece of plastic wrap over the open bottle with a rubber band, and left it on the kitchen floor for... nine years. The rubber band cracked and fell off around three years ago but the plastic looked sealed around the glass. On the kitchen floor in an un-airconditioned house, not completely out of natural light.
It was still pretty damn good.
Don't ever store a mead this badly. I'm sure things like this are the only kind of luck I get.
I an storing some traditional in stoneware bottles with screwcaps or those pushin corks with the plastic tops (T corks). Your story gives me ideas about using them long term. Oxidation? Hah! I laugh at thee....