The tongue is important to the flavor of food. It is the receptors of taste can be categorized into five basic tastes: sweet, salt, bitter, sour, and umami. The receptors on the surface of taste cell are activated by food and triggering nerve fibers that run to brain and generate the taste of food. The spicy food burn mouth because within has some compound. Sanshool compound in peppercorn causes of tingle gently to mouth because it binds to channel in the membranes of neurons in the tongue that respond to touch. Furthermore, capsaicin is an active component of chili peppers. It binds to a receptor on cells that detect temperature and cells that send messages of pain. However, capsaicin or other spicy food will not damage to tongue. We can eat as must as we want.