Black salt, also known as kala namak, is a type of rock salt commonly used in South Asian cuisine. It has a distinct sulfurous, pungent aroma and a slightly salty, tangy flavor, reminiscent of boiled eggs due to its sulfur content. Rich in minerals, black salt is often used in dishes like chaat, chutneys, and raita, and is also known for its digestive properties. Its unique taste enhances savory dishes and adds depth to beverages like lemonade and jaljeera.