Corks
Interesting. As a newbie I was advised by my retailer, 1 year for aglomerated corks, two years or more for solid corks, and 3 years or more for synthetic.
This retailer has won many awards, and always uses synthetic when submitting those.
To use synthetic you need a purple Floor corker, not the older orange variety that had jaws that scored these corks.
So I bought the newer purple corker, and a selection of all three cork types to experiment.
Kev