Hello! In fact, the principle of cast iron teapot cultivation is to make the teapot form a thin scale layer as soon as possible without destroying the internal protective layer. The water-alkali layer produced in this way is a natural protective layer to prevent the internal rust of the teapot. \r\nThe specific measures for rust prevention of cast iron teapots are as follows: \r\n 1. Pour the rice washing water into the unwashed cast iron teapot, open the lid and boil it for 20 minutes, then pour it out, and repeat it every day. \r\n 2。 Do not accumulate water in the pot after use. \r\n 3。 Never dry the inside with a cloth. When drying, be sure to dry with a small fire, or use the waste heat to evaporate the water. \r\n 4。 After about 5 days' use, little red dot similar to rust will appear at the bottom of the pot. Don't try to remove rust at this time, but continue to cook the pot with washed rice. \r\n 5。 10 days or so, these small spots will gradually become scales and the red will gradually turn white. The characteristic of this stage is that even if there are red spots in the pot, the water will not change color and will not smell of rust. \r\n 6。 If you want the surface of the pot to become thick black, you should wipe the surface of the pot with tea soup while it is hot after boiling water every day. \ r \ This process takes about 2 weeks, and then it turns a little white. Never use emulsion or steel ball hard brush to clean the interior.