Ya got me, I couldn't get it to work for me either.
I really wanted a frosty root beer and failed.
Smells a little like it but certainly doesn't taste like it.
I tried adding Bavarian Cream, Vanilla Swirl, Vanilla Cupcake, French Vanilla, and also Champagne. (individually then mixed some of those concoctions together)
I didn't have anything else that remotely made me think it would work so I gave up.
I make root beer and this is one of my favorites.
TFA Root Beer 7%
TFA French Vanilla 10%
TFA Mint Candy 2%
(Sweet) 1 drop of Ez Sweetz Per 5ml
You can eliminate the TFA Mint candy,it is good but strong.You can also bump up the root beer about 2% more.