You can vape it straight away, though the flavor does seem to mellow a little bit as it ages... granted, after a week, the tobacco seems to get a bit stronger tasting in the mixture, so if you are going to let it age a little bit, I would suggest cutting back on the tobacco blend, maybe cut in half. I have found that just a little touch of tobacco in a fruit mix doesn't really end up tasting like tobacco, but gives it a little kick in the flavor. Of course, I don't yet have any tart-n-sour to try yet, that might work better! For now, a touch of tobacco blend is my answer to needing a little bite in my fruit mixes 