There is a saying that the bulge in the middle of the pan is deliberately designed, so that the oil in the pan can be better dispersed, which is more convenient for us to cook dishes. Others think that the bulge in the middle of the pan is because it has the highest heating temperature in the middle when it is used on the gas stove, so it bulges in the middle after a long time of use. Why is the middle of the pan convex? There are many theories about why the middle of the pan is convex. One thinks that the pan was originally designed to be convex in the middle, because this can make the oil poured into the pan spread more evenly, which is convenient for us to cook dishes.
Others think that the bulge in the middle of the pan is because when we put the pan on the gas stove, the middle of the pan is the place with the highest heating temperature, so the pan bulges after a long time of use.
The pan is a very common kitchenware around us. It is very convenient for us to use the pan when frying things. Because the bottom is a flat pan, which can make the food heated better, so many people like to use the pan now.