On the one hand, the thickness, quality and thermal conductivity of the iron plate also need attention.

In addition, the iron plate can't be fixed tightly around. There should be 3-4 mm thermal expansion space.

The 6 mm board is really thin. The frying plate heated for a long time should be 10 mm thick. The periphery is slightly thinner and the middle is slightly thicker. The periphery is slightly higher and the center is slightly concave.

The surface must be smooth. The oil surface of tofu must be turned over after it is basically formed, otherwise it will be easily broken.

Add some large oil (lard) to the oil properly to improve the volatilization point of the oil. You can also order food quickly.