Wood 'seasons' & therefore you'll likely never get it back to brand new condition, or maybe even want to.I'm mostly wondering how I'd clean it. With the glass a warm hour long iso soak and then a couple minutes to dry and it's brand new.
Enjoy the wood as it ages & matures with use - something you don't get to do with clinical glassware.
But swabbing with a little high proof alcohol will generally do the trick to clean it up to a satisfactory standard.
Dark rum is good!