I actually didn't mix it myself, I used ECBlend's flavor creator. But I accidentally discoverd that fourths of the following makes a juice that tastes A LOT like Juicy Fruit gum: Pineapple, apple, peach, banana.
Made the flavor on a whim and was surprised it tasted so much like my favorite childhood gum. I'll probably put a little less pineapple next time I order. Hope this helps, cheers!
Thanks for the recipe! As a side note I remember reading a Organic chemistry lab manual about the synthesis of juicy fruit and how it was created.Speaking of which here is where I found the lab. http://bowluss.faculty.yosemite.edu/11_EsterSynthesis.html
Maybe you could perhaps find the juicy fruit chemical for us then get rich off the vapor sales?
Edit: Here is a great explanation http://smellslikescience.com/