Sweet potato (English: sweet potato) was originally named as sweet potato (Ipomoea batatas (L.) Lam. ), also known as red taro, sweet potato, yam (Hebei), sweet potato, sweet potato (North), sweet potato, sweet potato, sweet potato, sweet potato, sweet potato. Sweet potato belongs to the family Convolvulaceae of the genus Panicum, which is more than 2 meters long and lies on the ground. Its leaves are usually wide oval, 4- 13 cm long and 3- 13 cm wide. Corolla pink, white, lavender or purple, bell-shaped or funnel-shaped, 3-4 cm long, and capsule ovoid or oblate. Sweet potato is rich in protein, starch, pectin, cellulose, amino acids, vitamins and various minerals, and has the reputation of "longevity food". The sugar content reached 15%-20%. Has anticancer, heart protecting, emphysema and diabetes preventing, and weight reducing effects. The north is commonly known as sweet potato and sweet potato. Li Shizhen's Compendium of Materia Medica in Ming Dynasty recorded that "sweet potato can tonify deficiency, strengthen spleen and stimulate appetite, and strengthen kidney yin", and said that people in the sea can eat for a long time. Chinese medicine regards sweet potato as a good medicine.

Supplement small knowledge

Sweet potato+soybean milk-affecting digestion

It is not advisable to eat sweet potatoes or oranges when drinking soybean milk. Sweet potato+persimmon-stomach persimmon stone disease

After people eat sweet potatoes, gastric acid secretion increases. In addition, sweet potato is also rich in dietary fiber. These substances combine with phenol and pectin in persimmon, which is easy to form "stomach persimmon stone". Sweet potato+banana-facial spots

Sweet potato and banana will grow spots on their faces. Sweet potatoes and tomatoes-stones and diarrhea

Eating sweet potatoes and tomatoes together is easy to produce stones, and it can also cause vomiting, abdominal pain and diarrhea. Sweet potato+crab meat

Eating sweet potatoes with crabs is easy to form stones.

Potatoes cannot be eaten with persimmons. When eating potatoes, hydrochloric acid will be produced in the stomach, and persimmons will precipitate under the action of gastric acid, which is difficult to digest and discharge.

Potatoes can't be eaten with bananas, which will cause spots.

Potatoes avoid bananas-there are spots on your face when you eat them together.

Roast beef with potatoes is not good for digestion.

Potatoes can't burn beef, which will produce toxins.