Black Mustard (Brassica nigra) is a round hard seed, varying in color from dark brown to black, smaller and much more pungent than the white.Mustard seeds. Mustard seeds are a very popular ingredient in the American cuisine. Mustard brings an entire gamut of helpful constituents through its various edible parts. Mustard Seeds are a rich source of minerals such as calcium, magnesium, phosphorus, and potassium. Along with this, it is a good source of dietary folate and vitamin A as well. Mustard greens or leaves of mustard plants are an excellent source of essential minerals including potassium, calcium and phosphorous. It is also a good source of magnesium and dietary fiber. The immense wealth of vitamin content offered by mustard green includes a profuse amount of vitamin A, and vitamin K with folate, and vitamin C also present in decent amounts. CULINARY USES : Whole mustard seed is used in pickling spice and in spice mixtures for cooking meats and seafood. It adds piquancy to Sauerkraut and is sometimes used in marinades. In India, whole seeds are fried in ghee until the seed pops, producing a milder nutty flavour that is useful as a garnish or seasoning for other Indian dishes. The seed is also pounded with other spices in the preparation of curry powders and pastes. Mustard oil is made from B. juncea, providing a piquant oil widely used in India in the same way as ghee. Mustard acts as an emulsifier in the preparation of mayonnaise and salad dressings. Powdered mustard is also useful for flavouring barbecue sauces, baked beans, many meat dishes, deviled eggs, beets and succotash. There are many ready-made mustards from mild and sweet to sharp and strong. They can be smooth or coarse and flavoured with a wide variety of herbs, spices and liquids. SKIN BENEFITS : Natural scrub- Mustard seeds are an excellent natural scrub. You may use it alone or add essential oils of lavender rose, etc. and scrub your face and arms.