The mustard seeds are known in Hindi, Urdu, and Punjabi as sarson. In Bengali as sarisha or shorshe. These are used as a spice in Pakistan, Northern India, Nepal, and Bangladesh. The seeds are usually roasted until they pop. They are also planted to grow saag (greens) which are stir-fried and eaten as a vegetable preparation, called sarson ka saag in Urdu and Hindi.