First of all, go to the supermarket or farmer's market and buy one or two yuan of pigskin. Yes, you heard me right, just 1-2 yuan. If the other party knows that you are washing a new pot, they may give you a piece directly.
Wipe the skin clean when you bring it back, and then boil the pot over high fire. After the pot is slightly heated, put the skin in and turn on the small fire (pay attention to the skin facing up). In this way, the big oil in the skin will slowly seep out after being heated by a small fire. At this time, the fire is slightly increased, the skin is pressed with a spatula, and it is rubbed everywhere in the pot, so that the pot is wiped everywhere, constantly and more. The whole process lasted for more than ten minutes, and the treated iron pot will not rust and stick to the pot no matter how it is used in the future.
How's it going? Have you learned? Go and have a try.