Wow! 40%!
I've been obsessed with this flavor since day 1 of vaping. Honestly, it is what has kept me into vaping. My local B&M makes a killer JF vape in an 80/20pg mix and I've been obsessed with trying to replicate it to save a veritable fortune. It's impossible to find an agreed-upon popular recipe posted anywhere.
I know for a fact, however, the B&M uses FlavorWest JF which I have tried at 15%, and it turned out just "OK" mixed fresh. Not quite measuring up to the B&M's mix, but close. After a month of steeping, it really developed into a decent copy, but not quite there. I now have both EM and Sucralose added to the arsenal which I believe they use as well.
Picked up some TFA JF mix, and I'm gonna give it a shot at 18% with some EM. Just don't know what % to go with on the EM, and whether the addition of Sucralose will make it sickly-sweet. Trial and error, I guess?
The strange thing about EM, if you look into it, is that it IS the sole ingredient in "Cotton Candy" flavoring. The cotton candy bottle even says: EM Crystals and PG. My understanding is they mix it to 10%, thus it is the equivalent of buying the straight liquid EM or crystals, and diluting it yourself. Guess we'll see how it goes.