Plain menthol e-juice, no tobacco flavoring, is one of the only flavors I've liked so far. I've ordered some unflavored nic juice (18mg) and some menthol drops to use as flavoring and will be making my first DIY experiments when it arrives. What % menthol is good to start with? (I'm not concerned with diluting the nic content, it's starting at 18mg so a little lower will be fine) From what I've read it should probably be around 3 or 4%. I don't think I'm looking for a strong menthol flavor so I'd like to start low and work up. Anybody have any experience they can share? Will steeping have much affect on just menthol, will I be able to judge the results after a few hours or will I need to give it a week?