When cooking white kidney beans, soak them for about 4 hours first, and then cook them in a pressure cooker for half an hour, which makes them easier to boil. White kidney bean is rich in nutrition, with high contents of protein, calcium, iron and B vitamins, among which the content of protein is higher than that of chicken, the content of calcium is more than 7 times that of chicken, and the content of B vitamins is also higher than that of chicken. It is still rare to have high magnesium, high potassium and low potassium.