Advantages of coriander: expelling wind, dispelling cold, eliminating dampness, removing coriander and clearing nasal congestion. Can be used for treating common cold, cold asthma, laryngitis, whooping cough, dysentery, abdominal pain, amebic dysentery, malaria, infantile diarrhea, sinusitis, nasal polyps, eye itching, scabies, and traumatic injury. Leek, also known as Cao Yang, is very delicious and has its own unique fragrance. The unique pungent smell of leek is formed by its sulfide, which has certain bactericidal and anti-inflammatory effects and is helpful to improve human immunity. These sulfides in leek can also help the human body absorb vitamin B 1 and vitamin A, so leek is a more nutritious way to eat with pork food rich in vitamin B 1. However, sulfides are easy to volatilize when heated, so when frying leeks, you must quickly fry the pot. If you heat it too much, you will lose the flavor of leek. The main nutritional components of leek are vitamin C, vitamin B 1, vitamin B2, nicotinic acid, carotene, carbohydrates and minerals. Leek is also rich in cellulose. The content of cellulose in leek per 100g is higher than that in onion and celery. It can promote intestinal peristalsis, prevent the occurrence of colorectal cancer, reduce the absorption of cholesterol, and prevent and treat diseases such as arteriosclerosis and coronary heart disease. Although leek has many benefits to human body, not the more the better. Compendium of Materia Medica once recorded: "Eating more leeks makes people dizzy, especially after drinking." Modern medicine believes that people with hyperactivity of yang and febrile diseases are not suitable for eating. Leek contains a lot of crude fiber, which is not easy to digest and absorb, so you can't eat too much leek at a time, otherwise a lot of crude fiber will stimulate the intestinal wall and often cause diarrhea. It's best to control each meal at 100 g to 200 g, not more than 400 g.