Protein in potatoes is better than soybean and closest to animal protein. Potatoes are also rich in lysine and tryptophan, which is incomparable to general grain. Potatoes are also foods rich in potassium, zinc and iron. The potassium contained in it can prevent cerebral vascular rupture. It contains protein and vitamin C, which are all 10 times that of apple, and the contents of vitamin B 1, B2, iron and phosphorus are much higher than that of apple. From a nutritional point of view, its nutritional value is equivalent to 3.5 times that of apples.

Eggplant contains protein, fat, carbohydrates, vitamins, calcium, phosphorus, iron and other nutrients. The skin of purple-skinned eggplant is rich in vitamin E and vitamin P, which is of positive significance for protecting cardiovascular system and delaying human aging, which is incomparable to other vegetables.