A plant of the genus Brassica in the family of Brassicaceae with yellow flowers and linear seed pods.

Essential oil. The hot punget oil expressed from mustard seeds  is used

 sparingly as food dressing.

The powder made from seeds of the  mustard plant omega replica are used as a condiment

 or spice. The oil from that plant is very cherished by Indian people. The large leaves are consumed as vegetables.