Sweet potato leaves, that is, the tender leaves at the top of the stem of the above-ground seedling after the sweet potato matures in autumn. The test shows that every 100 grams of fresh sweet potato leaves contains 2.28 grams of protein, 0.2 grams of fat, 4. 1 gram of sugar, 0.6 mg of mineral potassium/kloc-0, 2.3 mg of iron, 34 mg of phosphorus, 6.42 mg of carotene and C0.32 mg of vitamin C. Compared with common vegetables, the contents of minerals and vitamins are superior, and the content of carotene is even higher than that of carrots. Therefore, the Asian Vegetable Research Center has listed sweet potato leaves as a highly nutritious vegetable variety, calling them "vegetable queens".

Sweet potato leaves have good health care functions, such as enhancing immune function, improving the body's disease resistance, promoting metabolism, delaying aging, lowering blood sugar, relaxing bowels, promoting diuresis, raising platelets, stopping bleeding, preventing arteriosclerosis, preventing cell canceration, promoting lactation and detoxicating, protecting eyesight and preventing night blindness. Foods made from sweet potato leaves are even placed on the tables of hotels and restaurants. In China, there are no sweet potato leaves for sale in urban supermarkets. It is a great pity that farmers throw sweet potato leaves in the ground together with stems after harvesting them, or use them as feed for livestock.

There are many ways to eat sweet potato leaves. Here is a brief introduction. Fresh and tender leaf tips are selected, boiled in boiling water, and seasoned with sesame oil, soy sauce, vinegar, Chili oil, mustard, ginger juice, etc., to make cold salad, which has a light green appearance and can make people appetite. You can also stir-fry sweet potato leaves with shredded pork, which is fragrant and sweet and has a unique flavor. In addition, the sweet potato leaves can be boiled in soup or put in porridge. There are canned pickled sweet potato leaf side dishes for sale in the Japanese market, and we can also add salt to make them into pickles and side dishes for auxiliary consumption. Now, when sweet potatoes are harvested and listed, people who like food and care about nutrition may wish to try sweet potato leaves.