Fried tofu with scallion and fried tofu with scallion are some dishes that many families often eat. Tofu is rich in nutrition, and people like to eat it, but eating tofu should also pay attention to science, otherwise it will destroy the nutrients in the human body and affect health.

This is because tofu is rich in nutrients such as protein and calcium, while onion contains a lot of oxalic acid. When tofu and onion are combined, the calcium in tofu and oxalic acid in onion combine to form white precipitated calcium oxalate, which destroys the calcium in tofu. Calcium oxalate is difficult to be absorbed by human body. If long-term consumption of tofu mixed with onions, onions and other vegetables, will cause calcium deficiency in the human body, prone to calf cramps, rickets, fractures and other phenomena. Some people use chopped green onion to flavor tofu, which is also unfavorable. Some vegetables containing oxalic acid, such as spinach, fresh bamboo shoots, bitter gourd and so on. When burning together, it should be scalded with boiling water first, and then used after removing most oxalic acid to prevent the formation of calcium oxalate.