Certified Organic! Yellow Mustard organic sprouting seeds make excellent, crunchy sprouts with good heat and a fine flavour reminiscent of horseradish. Mustard sprouts are packed with vitamins, minerals, and antioxidants. They're high in dietary fibre and contain 30-35% protein! Mustard seeds are ideal for sprouting because, just by their nature, they have a very high and fast rate of germination. That means you can use a sprouter or sprouting lid to wet them and drain them. Four days later your mustard sprouts will be big enough to eat. Sprouts are easier to digest than mature plants, so your body will take better advantage of the powerful nutrients within.