And then it comes along, the caffeine kick. And when I say kick, I mean in the mouth. It’s a bitter aftertaste that sits high and in the back of the mouth. It just kind of lingers there, like maybe it’s not something you ate but something you smelled (sometimes strong skunk will do that to me). And it stays with you, probably as long as the caffeine is in your system. I clocked my aftertaste for eating one half of a bar at 90 minutes.