It is suitable for patients with summer heat, upset, thirst, cold and heat, headache, polydipsia, dysentery, hypertension, dizziness, red eyes, flushing, constipation, excessive drinking, thirst and chronic alcoholism. If you want to treat chronic alcoholism, you can mix sweet potato with white sugar.

Disadvantages:

Sweet potato is cold, which is not suitable for people with cold constitution, cold diarrhea, spleen and stomach deficiency, loose stool and diabetes. Cold dysmenorrhea and female menstrual period are also not suitable for eating; Avoid eating cold potatoes and their seeds and leaves.

Extended data:

The scientific name of cold potato is Doudou (English name: Pachyrhizus erosus), which is a herbaceous vine of the genus Doudou in Leguminosae. Thick, twining, slightly hairy, sometimes slightly woody at the base. The raceme is 15-30 cm long, with 3-5 flowers per section;

Bracteoles setose, caducous; Calyx is 9- 1 1 mm long and densely covered with long bristles; Corolla light purple or reddish, flag nearly round; 8- 10 capsules per pod, nearly square; Root block, spindle-shaped or oblate, generally about 20-30 cm in diameter, fleshy.

Take its underground root tuber as raw food or vegetable food. Seeds are highly toxic and should not be eaten, but they can be used as pesticides to control aphids. Originated in tropical America, it is now widely distributed in tropical areas of the old hemisphere and widely cultivated in southwestern provinces of China. According to the shape of the root, it can be divided into oblate, oblate, spindle (or cone) and so on. According to maturity, it is divided into early-maturing and late-maturing varieties.

Early-maturing varieties: the plant has medium growth potential, small leaves, early root expansion and short growth period. The root tuber is oblate or spindle-shaped, with thin skin and few fibers. The weight of a single root is 0.4 ~ 1 kg, and it is eaten fresh or fried. Varieties are: Ping Huang sweet potato in Guizhou, Suining sweet potato in Sichuan, Mumashan sweet potato in Chengdu, Malay in Taiwan Province, Shage in Shunde, Guangdong, etc.

Late-maturing species: plants have strong growth potential, long growth period and late maturity of tuberous roots. The root tuber is flat spindle-shaped or cone-shaped, with thick skin, many fibers, high starch content and little water. Single weight 1 ~ 1.5 kg, and the maximum can reach more than 5 kg. Suitable for processing and grinding. Commonly used varieties are: Oryza Glutinosa in Zhanjiang, Guangdong, Lagerstroemia indica in the suburbs of Guangzhou, and Castanea henryi in Taiwan Province Province.

The oblate variety with small leaves, moderate growth potential, early maturity and good quality should be selected in the northern region. The single weight of potato is 250-500g, and the root surface has 4- 10 longitudinal grooves.

References:

Baidu encyclopedia-cold potato