Mustard seeds are used as a spice, there are a number of ways to utilize them. Many cooks in places like india throw Whole mustard seeds into a cooking pot with some oil before they start cooking a dish, ensuring that the oil is Flavored with mustard when the heated seeds pop. Mustard seed has long been relied upon to improve the Digestive system and to promote a healthy appetite. Mustard seed's topical use also extends to the relief of Respiratory infections when used in baths, poultices, and plasters. Mustard seed helps treat bronchitis, chest Congestion, pneumonia, croup, and pleurisy.