I was looking through my computer files for some notes about a flavor and found a recipe file from 2016. Apparently I added Marshmallow to most of my recipes back then. Also added Smooth to about a third of them. Can't remember why I did that or why I stopped. I still have bottles of both of them , maybe I'll give it a try.
I saved a bunch of recipes back then in lots of different formats. Eventually I settled on a spreadsheet which I still use.
Also found a pdf I had downloaded from somewhere called TFA Vendor Recipes, using TFA flavors only. That was a very old file. Most of them had 20% flavoring or more, some up to 30%. Like Earl Grey made with 13% Earl Grey, 8% Honey, 4% Sweet Cream and 5% Chai Tea. I believe I tried that one. It would fry my taste buds now. I used to like TFA Honey, it's one of those flavors that can taste nice when you vape it but it smells pretty foul when you are sitting downwind. The wife made me stop using it.