what is black salt?
The Health Benefits of Black Salt. Salt is one of those substances that humans depend upon, not only for its taste, but also for its health benefits and its ability to preserve food. The Indian black salt, also known as 'Kala Namak', is a popular variety of Indian volcanic stone salts. It is used extensively in India, Pakistan and internationally, by those who know its benefits. Its unusual color comes from the presence of tiny amounts of iron and other minerals.