Mustard, also known as mustard, is the tender stem and leaf of mustard, a cruciferous plant. It is pungent and warm in nature and belongs to lung, spleen and stomach meridians. It has diuretic and antidiarrheal effects, expelling wind and dispersing blood, and relieving swelling and pain. It is mainly used to treat dysuria, diarrhea, dysentery, hemoptysis, swollen gums, sore throat, sore hemorrhoids, itch of lacquer sore, traumatic injury, joint pain and other diseases, and is a common folk herb.

Amaranth is an annual herb of Amaranthus in Amaranthaceae. Native to Central America, tropical and subtropical Asia. There are more than 50 species of Amaranthus. Whether wild or cultivated, its tender stems and leaves can be used as vegetables, and flowers can be used for viewing. China is one of the origins of amaranth, and the word "amaranth" has been used in Oracle Bone Inscriptions. In addition, amaranth seeds eaten by Indians in 4000 BC were found in Mexico. It has a long cultivation history and is one of the oldest crops in the world.

The content of protein in amaranth plants and seeds is relatively high, accounting for about 4.6% of the fresh weight of leaves and12 ~18% of the weight of seeds, respectively. Among them, the content of essential amino acids for human beings is balanced and has high physiological value. The net protein utilization rate is above 60 ~ 70%. Methionine and serine, which are low in most plants' protein, are abundant in amaranth protein. Delicious, mostly used as fresh vegetables. It is also advisable to marinate with fleshy stems.

In addition, there is a kind of grain amaranth, also known as Millet Valley, whose seeds can be ground into flour for food.