Margarita salt is a coarse grained salt which is ideal for crusting the rim of a margarita glass. The salty flavor complements the flavors of the margarita, and the light crunch can provide a pleasant mouthfeel. The salt also quickly dissolves once it enters the mouth of a consumer. Many markets sell an assortment of coarse grained salts, all of which are suitable for margaritas, and some shops may sell margarita salt specifically.