"Ercai", also known as fist dish, Nanchong dish, baby dish and baby dish, is a variety of mustard. The scientific name "holding mustard" is a kind of mustard. The thick roots are surrounded by buds, and many swollen buds grow around the big stems, just like there are many children around the mother in the middle, and a mother has many children. This is the origin of "children's dishes".

The effect of children's vegetables is detoxification and detumescence, promoting digestion, stimulating appetite, moistening the intestines and relaxing bowels. Children's vegetables can also be supplemented with iron, which has certain benefits for diuresis and dehumidification. There are many kinds of dietary fibers in children's vegetables, which can accelerate intestinal peristalsis, promote fecal excretion and effectively prevent constipation.