It's Cookie Nip. If you know...then you know.
'Nuff said.
(If you don't know - Cookie Nip is a bakery emulsion that is a butter sweet blend of vanilla bean and salted caramel. While it was formulated by bakers for use in cookies, cakes, and frosting, it can be used as a substitute for vanilla in any recipe calling for vanilla. The sweet and salty combination tastes great in all kinds of treats!)