The Materia Medica of the Hindus, compiled from Sanskrit Medical Works c4.s19.4

c4.s19.4

सामुद्र Sámudra literally means produced from the sea. The term is applied to sun-dried sea-salt, manufactured in the Madras Presidency. It is called karkach in the vernacular. Orthodox natives, who consider common salt as impure from the circumstance of its having undergone the process of boiling, and who take only rock salt, substitute karkach for rock salt, if the latter is not available. Sun-dried sea-salt is described as somewhat bitter and laxative. In other respects its properties are said to resemble those of rock salt.