Black salt, A type of rock sat, composed largely of sodium chloride with several other components lending the salt its color and smell. Black salt benefits are plenty, and it acts as a cooling spice and recommended as a treatment for many health issues. It is very popular in India, Middle East, France, Japan and Spain. It’s also called as ‘Black lava salt’, ‘kala namak’ salt or ‘sanchal’ and is a type of volcanic rock salt. It’s commonly used in Asian countries surrounding the Himalayan Mountains like India and Pakistan. It has been used for hundreds of years as traditional medicine, for cooking and as a beauty aid.