Kala Namak (or Indian Black Salt) comes from the legendary Himalayan Mountains of India and has been used for centuries in Indian cuisine as a cooking and finishing salt.  It has very unusual aroma reminiscent of cooked eggs.  When ground into the small crystals or powder, it actually changes color to pink. In addition to its taste it also has exceptional health benefits. 

In India, black salt is recommended for people with high blood pressure and to people who are on low-salt diets, because its lower in sodium and does not increase sodium content in the blood. It is also know for comforting intestinal gas and heartburn. It is also believed to help with indigestion.