Mustard is a condiment made from the mustard seeds from one of three varieties of mustard plant: Sinapis alba, white mustard (also known as yellow mustard); Brassica juncea, brown mustard; or Brassica nigra, black mustard. The whole, ground, cracked, or bruised mustard seeds are mixed with water, vinegar, or other liquids, and sometimes other flavorings and spices, to create a paste or sauce ranging in color from bright yellow to dark brown.