What is Rock Salt: Where does it come from?

Most of the salt used in cooking, including Kosher and table salt, is produced by filling underground salt deposits with water and extracting the water. After that, the water is evaporated to remove the crystals. Sea salt is a smaller amount of salt that is made by vaporizing seawater. A different sort of salt is called rock salt . It is retrieved directly from the earth, so it retains its cube-shaped, crystalline form. Rock salt is not meant for human consumption because it contains other minerals and impurities. However, rock salt use can be used in ice cream making and keeping cold drinks icy. This is because salt lowers water's melting point, meaning that ice water containing salt will become colder while still being liquid than water without salt. Salt can be added to an ice water bath to achieve temperatures as low as 6 degrees below zero (F), without it freezing solid. From Where Does Rock Salt Come? All over the globe, you can find rock salt at Walmart . Y...