Mustard seeds are seeds of a mustard plant. The brown/black mustard seeds are a staple in Indian cuisine. Grown mostly in temperate climate of Europe and North Africa, mustard seeds have a distinct bitter spicy taste. As they are rich in oil and protein, oil is extracted from mustard seeds for cooking purposes. These tiny seeds are packed with a plethora of healthy nutrients and including these in daily diet will benefit greatly. Mustard seeds are known to prevent cancer, relieve migraines, aid in digestion, and maintain good cholesterol levels. Mustard seeds are rich in magnesium, selenium, Vitamins A, C, and K.