I'm not really good at describing flavors and tastes but what you will notice is that the vanilla and caramel will intensify and balance out with the tobacco.
Right out of the mailbox, there are times I can taste the caramel, then at times the vanilla. In both instances with hints of the other flavors. There's also that little bit of spiciness on the tobacco which is most predominant at this point.
A couple of days later, I started noticing that change. Flavors pop out more being less tobacco-y. Flavors are mending together slowly.
Once it's aged, all the flavors are well blended, fully intensified and not one seem to stand out more than the others. The flavors get much deeper both on inhale and exhale. Then the spiciness of the tobacco comes out more almost as if there's a little bit of menthol. It's really indescribable. I think cinnamon might also be present but not sure.
Also, the color of the juice darkens once it's aged.
Next time it's available, I'm gonna get a 30ml to steep for months. Note that the RY4 I had was 5 months old so the difference is dramatic.
Hope you at least got a little from my rather vague description.
Don's RY4 is just phenomenal. I suggest you leave a good amount alone for 2 weeks {if you can handle it
} and give it another taste test. I'm pretty sure you'll notice it.