Before cooking, it is mainly to master the materials and ingredients, and the materials such as catechu, black tea and cassia seed must be authentic. The materials I used locally at first didn't work well. When the pot and stove are ready, you can start. At this time, you need to find silk stockings discarded by your girlfriend or wife to wrap the materials and put them in the pot to prevent the materials from sticking to the cans and causing unevenness when cooking. Boil the materials and water first, and then put them in the jar. Pay attention to the bottom of the jar, which can be paved with lotus leaves, reed leaves and the lid of the jar to reduce the impact of boiling water on the jar and avoid pasting the bottom of the pot. The pot can be boiled for more than 20 minutes and then it can be taken out. You should immediately try the outside with a dry cloth (called a plate basin in the north), which can remove the adhesion on the outer wall in time, avoid the weakening of air permeability and prevent hairiness in the future. After cleaning, if the color is uniform and the expected effect is achieved, immediately put it in the sun to dry. It must be dried in direct sunlight to avoid hair growth in the future. If you think the color is not enough or the flowers can be cooked in the pot for a second time, take them out and try them, then cook them again. Remember, it must be cleaned, otherwise it will also affect the uniformity of materials entering the tank. I usually make it for my friends 5-6 times. ) After cooking the pot, it is found that the effect of using coal ball furnace, gas furnace and electric furnace is different, because the hot spot of flame directly affects the color uniformity of the pot. It is best to use a floor pan, and the wood is cooked with fire, which is fast, evenly colored and effective. Hehe, friends who don't have this condition can cook it several times according to the above method. The traditional Chinese medicine properties of catechu, cassia seed and other materials are not introduced. As we all know, less catechu should be put, because the viscosity of catechu is high, which will affect the air permeability in the later period. Pomegranate peel and black tea play a major role in coloring. In addition, white, red, yellow and earth blue pots have good cooking effect, bright ones are ebony red, black ones are black and shiny, and fine mud blue pots have poor cooking effect.