As long as the inner wall is not copper, iron, aluminum and other materials that are easy to oxidize in the air or react chemically with traditional Chinese medicine, all kinds of pots with inner walls that are not easy to oxidize in the air or react chemically with drugs can be used to cook traditional Chinese medicine!
Decocting water is based on the principle of cleanliness, tap water is enough, and purified water or distilled water is not necessary. You can soak medicine in warm water in winter. Drugs are generally not washed. For example, seeds and fruits can be soaked for one hour, ordinary herbs for 40 minutes, and winter 1 hour.
The duration of decoction is divided into "fierce fire" and "slow fire". Fierce fire refers to a kind of frying method with big fire, urgent fire, fierce firepower, rapid temperature rise and more water evaporation. Slow fire refers to a frying method with small fire, slow fire, weak firepower, small temperature change and slow evaporation of water. Generally, decoctions are first boiled with strong fire and then decocted with low fire for 25 minutes. However, some prescriptions, such as exterior-relieving drugs, antipyretic drugs, aromatic drugs, etc., only use strong fire, and it is not appropriate to decoct for a long time with small fire. Moreover, the thick nourishing prescription should be fried for a long time with a small fire to make the medicine taste. In addition, aconite, wolfsbane, aconite and other poisons should be decocted in a small fire for a long time to reduce their toxicity.