Black mustard seeds are the small, round, and black colored seeds of the mustard plant. They have a sharp, pungent flavor and are commonly used in Indian cuisine for pickling, curries, and marinades. The seeds can be toasted to bring out their nutty flavor or ground into a powder for use in spice blends. At The Chakki Co, we freshly grind whole black mustard seeds to maintain their aroma and flavor, ensuring that you get the best quality spice for your dishes.