As for steeping juice.............wouldn't it be easier to steep everything right when you get it. Like some flavors kinda have a perfume taste when first mixed but it goes away in a few days. My nic, pg, and vg have no after taste so how about just giving the whole new flavor bottle a warm bath and leaving the lid off for a week or so? Do you think this would speed up the process? Maybe only needing a day for the flavors to meld?