1, the casserole dish is filled with water and left to stand for 12 hours and more, allowing the casserole to absorb enough water. Pour more than two-thirds of the rice water into the casserole, and then turn the heat to high after 3 minutes of low heat, until it boils and boils, so that the starch contained in the rice water fills the cracks of the casserole. Turn off the heat, wait for the temperature to drop a bit, pour off the rice water and dry it with a rag. The casserole is left to stand and dry naturally, then you can stew delicious soup, so that the casserole is open well.

2, with a dry cloth to wipe the dust of the casserole, pour the right amount of water, add the right amount of raw rice, open a small fire to cook, stirring at the right time during the period to avoid burning, about 1 hour after the fire. Stand overnight, the next day to pour out the porridge, slightly clean the casserole with a neutral detergent, wipe dry with a rag, and then inverted to dry naturally, so that the casserole is open pot well.

3, casserole opening method: casserole opening can be used to cook rice water and porridge method so that the starch or porridge consistency filled with casserole cracks, wiped clean and air-dried on the opening of the pot.