Kohlrabi is a unique vegetable in southern China, but friends in the north seldom eat mustard. Kohlrabi is mustard. In the north, people will use kohlrabi to make kimchi. As a unique vegetable in China, kohlrabi is deeply loved by Guangdong people. Don't think kohlrabi has any special taste, but you will get used to it if you eat it often. Mustard usually refers to leaf mustard. Leaf mustard includes big leaf mustard, small leaf mustard, potherb mustard, cabbage mustard and so on. In Guangdong, large leaf mustard and small leaf mustard are the most common. Dietary health mustard is warm and pungent, belonging to lung and stomach meridians; It has the functions of dispersing lung qi, benefiting middle warmer, removing toxic materials, relieving swelling, stimulating appetite, promoting digestion, warming middle warmer, benefiting qi, improving eyesight and benefiting diaphragm; Indications: cough with phlegm and blood stasis, chest septum obstruction, sore and swelling, hearing loss, gum swelling and pain, cold abdominal pain, constipation and other symptoms.