Just cold, the more you add the colder it gets. No mint at all ever, it's just a cold temp control dial
After so much it's so cold you'll even swear your breathing out cold air, I've felt it like that blowing it slowly on my hand, so I really do think it somehow effects the temp of the vapor not just our perception of it.
Too much can make it unvapeable too, so be careful if you try to go really cold. It's not that it makes it too cold when that happens, it just makes it so you can't breath it in or out for some reason, like it irritates something in your
throat so you can't breath it right and it makes you cough.