Spinach is rich in vitamins, especially vitamin C. Every 1g of spinach still contains 7 mg of calcium, 34 mg of phosphorus, 2.5 mg of iron, 56-66 mg of zinc, 2 g of protein, .2 g of fat and 2 g of sugar. Spinach also contains rutin, a large amount of a- spinach sterol, spinach leaf element and so on. Spinach root contains spinach saponin a and spinach saponin B. Spinach can stimulate pancreatic secretion and help digestion. Spinach is good for constipation and hemorrhoids patients because of its slippery nature.

Although spinach contains a lot of iron, according to the research of food scientists at the University of Wisconsin in the United States, only 1% of the iron in spinach can be dissolved and absorbed in the intestine, and the remaining 99% of iron combines with oxalic acid and other substances to form insoluble complexes, thus losing its nutritional value. Therefore, before spinach is cooked, it should be blanched in boiling water for a while, so that more than 8% of oxalic acid can enter the water, and then cooked with other foods. Generally speaking, it is reasonable to cook soup with spinach and animal foods such as pork liver and shredded pork. However, spinach tofu soup, spinach and egg soup are still controversial in academic circles. It is believed that calcium and protein will inhibit the normal absorption of iron.

Spinach and tofu should not be eaten together. When eating spinach and tofu, some people cook them in one pot, which is considered as the most ideal vegetarian food. But this is a wrong approach. Because spinach contains chlorophyll, iron and so on, it also contains a lot of oxalic acid. Tofu mainly contains protein, fat and calcium. Cooking the two in one pot will waste precious calcium. Because oxalic acid can react with calcium to form insoluble precipitate, which cannot be absorbed by human body. Therefore, in order to maintain nutrition, first, spinach and tofu are divided into meals, so that there will be no chemical reaction. Second, you can first blanch spinach in water, let some oxalic acid dissolve in water, take it out and cook it with tofu.

spinach and eel should not be eaten? The food of eel is sweet and warm, which can tonify the middle energizer and qi, and remove air-conditioning in the abdomen. Spinach, on the other hand, is sweet, cold and slippery, and it moistens the dryness under the breath. According to Compendium of Materia Medica, spinach can "warm the stomach and intestines". It can be seen that the sexual and taste functions of the two foods are not coordinated. Moreover, eel is fried and fatty, spinach is cold and slippery, and eating together can easily lead to diarrhea, so it is not appropriate to eat together.

the best combination of spinach is carrot and spinach.