Morton Kiln Dried Feed Mixing salt is a non-food grade solar salt primarily used in the agriculture feed industry. The salt is harvested from concentrated brine that has crystalized in shallow ponds through slow evaporation via solar heat and wind. The salt is washed, dried, and screened to void much of the inorganic salt impurities. The salt breaks into rectangular particles that are crystalline to white in appearance. This salt contains no additives. Please note this product line is not suitable for direct incorporation into food.