A pure mineral salt that is actually mauve in color. When wet it takes on a blacker hue. It is high in sulphur which gives it its strong flavor. Try sprinkling black salt on raw daikon radish or raw beets. It is a main ingredient of "chat masala", an Indian spice blend that is used on fresh fruit (such as apples and bananas) and snacks. It is also used in cooking, however the flavor then diminishes greatly. It is used as a digestive aid. It is available in Indian grocery stores.