Microgreen mustard seeds produce mildly spicy, tender, succulent microgreens that add mild horseradish flavor to salads and blends. They are very fast to germinate and grow. Try scattering mustard microgreens over salads for a subtle hit of flavor. So close to horseradish in flavor, they make a fine complement to roast beef or even sushi. A superb source of carotene and antioxidants, as well as a host of vitamins and minerals. Mustard microgreens are green in color.