I've got a fossilized jar of some type of finish on the shelf over the bench.
Kinda looks nice, color,, and all those nice old marbles stuck inside it.
A conversation piece I think they call it.
No matter what I've done, even decanting into much smaller containers,, once the original container is opened, the clock is ticking towards it drying up/going bad in the container it seems.
The only off the shelf weekend DYI finish that I've found never to go bad once the container is opened is
Formbys Tung Oil Finish (Varnish?). Not that I experiment w/ a lot of different ones.
Decent stuff, drys over night on light coats and that plastic bottle with Homer's face on it still has good stuff inside even after a few years on the bench.
Permalyn Sealer started to hit the wall within a few weeks after opening. I liked that stuff too, I don't like throwing away 1/2 of it or more no matter what it is though.