1. Yams are generally cooked by steaming them for 10 to 20 minutes. The specific time for steaming yam is related to many factors such as the size of the yam, the cooking pot and the firepower. For ordinary cooking, cut the yam into small pieces and steam for 20 minutes.

2. Yam, the name of Chinese medicinal material. This product is the dried rhizome of the Dioscorea plant Dioscorea. Excavate from November to December, cut off the roots, wash the soil, scrape off the outer skin with a bamboo knife, and dry it in the sun or oven to make hairy yam.

3. Functional indications: strengthening the spleen, nourishing the lungs, strengthening the kidneys, and replenishing the essence. Treats spleen deficiency and diarrhea, chronic dysentery, fatigue and cough, thirst, spermatorrhea, leucorrhea, and frequent urination. Nourishes the spleen and stomach, produces body fluids and benefits the lungs, nourishes the kidneys and astringes essence. It is used for spleen deficiency, less food, persistent diarrhea, lung deficiency, asthma and cough, kidney deficiency, spermatorrhea, vaginal discharge, frequent urination, and thirst due to deficiency of heat.