TVR recommends steeping for all their juice, and I have to say their juice DOES improve with steeping. If you have an atomizer tho just drip it all pre-steep and if there are any you like right away, go for it and start vaping them. If there are ones you don't like, let them steep and try them again later. I just got some TVR juices today and I tried them all pre-steep, none of them were horrible, but I think the Expresso is gonna be better with steeping, so put that aside. I read somewhere recently that one may need EXTRA steeping. But I definitely taste potential in it. Really good potential. I think this could be the best expresso yet. I'm already vaping away the gingerbread and lemon meringue in cartos without steeping, I have bigger bottles of those and tho I think they will improve as the juice ages I think they are good right now too so I got cartos started on those. I am not sure yet what I think of the buttery popcorn lol. Unfortunately I got the wrong nic level, I got 24 mg when I wanted 6 mg!! Yikes. But it was just the 3 ml freebie so not a big deal.