Black Salt (also known as Kala Namak) is a special type of rock salt mined from the volcanic regions of Pakistan and India. It is actually purple-ish/pinkish grey rather than black and has a very distinctive sulfurous mineral taste, rather like hard boiled egg yolks.

Black Salt is used in Indian cuisine as a condiment and adds its distictive flavour to tangy fresh salads called 'chaats', and also in fresh chutneys, snacks, pickles, raitas (yogurt-based salads) and many other savoury Indian items. It is sometimes used to flavour tall summer cool drinks like the famous cumin-scented Jal Jeera.

According to India's classical medical science, Ayurveda, black salt is full of therapeutic benefits. It is rich in iron, and is a cure for flatulence and heartburn.