WHY MINT TASTE COLD

There is a chemical in mint, menthol, which is deceiving the brain into thinking that the area the menthol is applied to is cold; even though in fact, it's the same as it was before. More specifically, menthol binds with cold-sensitive receptors in your skin; there receptors contain things called "ion channels", in this case TRPM8. The menthol makes these much more sensitive than normal, so they trigger and you feel a cold sensation, even though everything is more or less the same temperature as before.

This extra sensitivity is why when you eat peppermint, which has a relatively high level of menthol, and then you breathe in deeply through your mouth, your mouth feels extra cold. Your cold receptors are reacting much more strongly than they normally would to the air which is cooler than the inside of your mouth.

Menthol is a compound classically obtained from various mint plants, though now is oftern synthetically made due to the extreme high demand for menthol in a variety of products. Menthol is a waxy, crystalline substance that is somewhat clear or white. Interestingly, it is actually solid at room temperature and melts just a few degrees above room temperature.