cleaning, unlike cleansers based on pumice or calcium carbonate, which can leave a gritty residue if not thoroughly rinsed away. Manufacturing Rather than cubic crystals, kosher salt has a flat plate-like shape and for some brands may also have a hollow pyramidal shape. Morton Salt produces flat kosher salt while Diamond Crystal produces pyramidal. The flat form is usually made when cubic crystals are forced into this shape under pressure, usually between rollers. The pyramidal salt crystals are generally made by an evaporative process called the Alberger process. Kosher salt is usually manufactured with a grain size larger than table salt grains. Diamond Crystal salt is made by Cargill in St. Clair, MI and Morton Salt is from Chicago, IL. See also References Edible salt Kosher food