Spinach contains oxalic acid and tofu is mainly because of its high calcium content. In the past, people also thought that acid and calcium might react, affecting the nutritional absorption of food, or kidney calculi and gallstones would occur after eating, so they were worried. However, there is no clinical evidence, so don't worry too much, generally it won't cause any big impact. Generally speaking, it is suggested that spinach and tofu should not be stewed together, such as spinach stewed tofu and cold salad, which has no high temperature effect and may have little effect. The nutritional value may be easier to use and should be more suitable. First of all, spinach is called "Iron Prince" in our daily life. I remember seeing strong water when I was a child. Because it is rich in carotene, vitamin C, folic acid, vitamin K and minerals (calcium and iron, etc. Secondly, tofu is a kind of bean product, which is rich in trace elements such as iron, magnesium, potassium, zinc and vitamins, and is called "vegetable oil".
Why not try to eat spinach and tofu together? Because spinach contains oxalic acid, it will form calcium oxalate and magnesium oxalate with calcium and magnesium in tofu. The precipitation of these two substances will not only affect the absorption of calcium by human body, but also easily lead to stones. So try not to eat these two things together. However, science also shows that oxalic acid in spinach is very soluble in water. Spinach can remove more than 80% oxalic acid as long as it is blanched in boiling water 1 min. Stir-fried tofu and blanched spinach, mixed together, no problem.
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