Sarson, also known as mustard seeds, are small, round seeds that come from mustard plants. They are usually 1–2 millimeters in diameter and can be yellowish white to black in color. Mustard seeds are a key spice in many regional cuisines and are rich in calcium, manganese, omega-3 fatty acids, iron, zinc, protein, dietary fiber, and selenium. They also contain organic compounds and volatile oils, and are a good source of B-complex vitamins.

Yellow mustard seeds, also known as Brassica alba, are small, yellow seeds with a pungent taste and an aromatic, rustic fragrance.

Yellow mustard seeds are rich in phyto-nutrients, antioxidants, minerals, vitamins E and B, calcium, manganese, iron, and zinc. They have a sharp, pungent, and warming flavor, and a clean, fresh aroma.