Chocolate Cools the Mouth!

Maybe you might have noticed yourself, but well-made chocolate leaves a refreshing sensation in your mouth. It is a quite unusual characteristic for such a rich food: as it melts it cools the mouth. This has been explained by the fact that the stable fat crystals contained in chocolate, melt in a very narrow temperature range, and just below body temperature. The phase change from solid to liquid absorbs much of the mouth's heat energy and leaves little to raise the temperature of the chocolate, which therefore feels persistently cool.