Duck feet: nourish stomach and yin, clear away deficiency and heat, promote diuresis and reduce swelling. It is suitable for people with deficiency of body due to yin deficiency and hyperactivity of fire due to yin deficiency, such as cough with little phlegm, dry throat, dizziness, headache, edema, dysuria, etc. There is heat in the body, getting angry; People with low fever, physical weakness, less food and dry stool should eat it. It can replenish water, nourish yin, clear away heat and relieve cough. Yam and duck can be eaten together, and the lung-tonifying effect is better. Tomatoes: promoting fluid production and relieving cough, invigorating stomach and digestion, cooling blood and calming liver. It is suitable for people with summer heat, polydipsia, dry mouth and fever, loss of appetite, cancer patients, vitamin C and nicotinic acid deficiency, gingival bleeding, hypertension, nephropathy, heart disease and hepatitis. Tomatoes are suitable for beauty and health food. Yam: strengthening the spleen and stomach, tonifying lung qi and benefiting kidney essence. Yam can dilate blood vessels, improve blood circulation, enhance immunity and delay cell aging. Yam is suitable for all people with physical weakness, weakness after illness, malnutrition, chronic diarrhea due to spleen deficiency, loose stool, mental fatigue, excessive leucorrhea, lung and kidney deficiency, chronic cough and wheezing, shortness of breath and nocturnal emission, frequent urination, etc. Stew the three together, which is a good combination of health care and treatment.