That’s fair, it’s a bit arbitrary timing wise.

You should average out the block times of the time you spent growing and then bottling. 😂 

 vintage seems enough  

 This is one of those things that people think they want until it comes time to actually pay for it to be implemented. This could work with extremely small batch stuff I'm sure but I've seen "small" wine operations and some of those tanks are fucking huge. I can't imagine doing this without some really expensive setup. 

 well said.

I think it comes from people who don't quite understand wine and just want a nod.

the only block height that makes sense is the one where the bottle was finished. 

 I suppose a birth date might make some sense, but wine isn't really the same at any particular point. I could say that the birth is when all necessary components are combined, but the alcohol component isn't there yet (and maybe other chemicals - I don't know the full chemistry). It's a super complicated expectation 

 This would be a lot easier with Bourbon since it doesn't age after leaving the barrel.