As long as it is handled properly, tofu and spinach can be eaten together.

Spinach is very nutritious, but every 100 grams of spinach contains about 300 milligrams of oxalic acid. Tofu contains more magnesium chloride, calcium sulfate, both if the same time into the body, will generate insoluble calcium oxalate, not only will cause calcium loss, but also may be deposited into the stone. Therefore, in folklore there has always been spinach and tofu can not be consumed together. But the combination of oxalic acid and calcium to produce calcium oxalate is required to reach a certain amount, in daily life, cooking spinach and tofu together will not reach such an amount.

In fact, it is not advisable to eat spinach or tofu alone too much at once. Because spinach does not contain the highest amount of iron, and can not supplement the blood, and in spinach, only 10% of the iron in the intestinal tract to be absorbed, the other 90% of the iron is combined with oxalic acid into insoluble substances. These insoluble substances are not only difficult to absorb, but also affect the body's absorption of iron. Although tofu is rich in calcium, but only in supplemental calcium at the same time increase vitamin K, the body will have a higher rate of absorption of calcium, eating tofu alone on the calcium absorption rate is not high.

Therefore, combining tofu, which is rich in calcium and protein, with spinach, which is rich in potassium, magnesium and vitamin K, is the perfect match for calcium and bone health. As for the oxalic acid in spinach, just cook it once in boiling water. Since oxalic acid is very soluble in water, blanching spinach in boiling water for 1 minute will remove more than 80% of the oxalic acid. The advantage of this is that vitamin K is not afraid of heat and is not soluble in water, and blanching spinach will not cause loss of vitamin K. However, vitamin K needs the help of fat to be absorbed, so put oil in the spinach and tofu when you sauté them together.

References

Experts clarify 8 food incompatibility lies Spinach and tofu should not be eaten together - People's Food Network - People's Daily Online. People.com[cited 2018-4-30]