Oil tofu, a traditional dish of the Han nationality, is called bean curd in the north. It is a fried food of tofu. The main raw material is soybean, which is made by grinding, pressing and frying. It is about 8 cubic centimeters in volume. It can be used as the main course of steaming, frying and stewing, and can also be used as the ingredient of various meat products. Its color is golden, and it is like silk meat, delicate and empty, elastic, and contains high-quality protein.