A restaurant in Scottsdale, Arizona, has encouraged patrons to enhance their food or drink by licking a dining room wall made of Himalayan Rock salt, WLBT-TV reported. The head chef at The Mission restaurant brought in the rocks to improve the overall ambiance and add a unique touch for customers enjoying tequila shots. For those who are squeamish about the germs, the rock salt reportedly has natural sanitary properties, but the restaurant staff also regularly wipe down the walls.