Firstly, I have never even tried BB but I wanted to. Can't get it where I am. So I am doing DIY and thought I would research the subject. I read every post on ECF about BB going back to the beginning.
Simple recipe, no more than 4 items, changing flavor along the way, reddish tinge to the liquid, earthy, nutty, spicy highlights, strange smell, little bits seen floating in the liquid, expensive ingredient, inventor has Asian exposure (although Spanish, Turkish, Iranian is more apt).
I believe the key secret ingredient is missing. And I am pretty sure it is..............SAFFRON
Probably something similar to the very first recipe on the thread. My guess would be he is doing a saffron extract with VG and adding it to the mix. It is very strong so only a very small amount is needed. And did I mention it was expensive? In fact the most expensive spice on the planet. (Not 'Arrakis' expensive but close). This is what gives it the reddish orange tinge and leaves those tiny little bits floating in the liquid IMO.
Tobacco Extract (Possibly RY4 and no need to add vanilla below)
Vanilla
Coconut
Cola
Saffron
My conclusion anyway - Have fun.
Saffron extraction
Get saffron, crush it in fingers, add it to VG in shot glass, microwave for 15 seconds, let it steep for 6-8 hours. Liquid turns from a yellowy orange to a reddy orange as it steeps. I have no idea how much to add.
Another little tid bit there is a flavored tobacco out there called Bounty which states vanilla coconut and cola notes ;-)
Addendum
On reflection I am going to put forward that the base of BB is actually a saffron VG extraction with flavorings and nicotine added to the base. This makes sense when I see the color of my saffron extraction which is almost exactly the same as BB and the fact that it still has minute particles of saffron in it. Pure speculation of course ;-)