Often it is difficult to change existing bars with "new stuff".
However I am asking myself, why are new bars not growing mint themselves?
Hydroponic systems are quite efficient and easy to maintain.
First: why should a bar grow their own mint?
The answer is quite obvious, bars are using a lot of mint. And mint is quite delicate - that means, transporting it, will take its toll.
But there are points, which are going even further: self-grown mint, would need less to be processed (washed, stored etc).
Second: there is even more to it.
Mint has most of its aromatics in microscopic hair underneath the leaves. While it is transported, it looses a lot of these hairs, and the aroma is gone forever. Even a sophisticated system, how to revive mint and keep it for along time, will not change, that this mint will taste only like a shadow of fresh harvested mint!
Third: mint growth
I admit, if you first of all plant mint, it seems a bit of a delicate thing. But after it has grown, you hardly need a green thumb for it - it grows like crazy! I have mint on my balcony, and it suffocate all other plants... parsley, rosemary and basil are surviving... but definitely not thriving, rosemary and other herbs just won't survive, because the mint is basically everywhere.
It can be pretty!
This is another "new bars thing". In existing bars, it seems a tough call, to have mint pods (or even worse: a hydroponic set up) as interior.
But if the designer is aware of it, it can not be only tolerable, but really an USP for the bar. Obviously I would have alernate lighting - growing light (which is bright and rather cold) over the day - and ambient and less intense light in the evening.
There are rotating hydroponic systems, which look directly out of Star Trek (well they were co-developed by NASA), which could be also a serious cool bar feature....
Sorry - but I am fed up and tired of interior features of bars, which are just there to make the bar "interesting". But really make the bar to a cookie cutter concept. Instead we should focus on bringing really items in bars, which really make sense - for the operation, for the production etc.
And a mint hydroponic system would really be that.