Review of Koolada 10% PG Flavor-TFA:

Does exactly what it claims. Menthol feel without the minty taste. But make sure you don't overdue it. .5ML (yes, half a milliliter) in a 120ml bottle is more than enough.  Have found it to dilute the actual flavor if I use any higher of an amount.  I'm normally a flavor hog, but a dab of this goes a long way. Good stuff, I'll be keeping this on hand for all recipes just to jazz things up when I get bored with a flavor.