Ever wondered why a mint pouch feels cold? The menthol that is contained in mint causes a reaction making the mint feel cold. The menthol triggers the nerves, changing the electric pulse sending a message to the brain that you’re eating something cold. All mint products offer a cooling sensation and can sometimes “burn” more under the lip. Peppermint is the strongest mint in the mint family. It has an intense mint flavor, with a sweet, mellow flavor of lemon.