1. Wash fresh houttuynia cordata and put it in a clean pot to drain the water. Wash it and put it in the pot. Add cold water to prevent houttuynia cordata. After the water is boiled, put it in a pot, heat it with fire and cook for a few minutes. Because houttuynia cordata should not be fried for a long time, turn off the fire and eat houttuynia cordata after 2 minutes. Fresh houttuynia cordata is soaked in water as tea or cooked and fried as a dish. Cough, excessive phlegm and yellow phlegm (the amount varies from person to person).

2. You can add water before cooking after decanting. Don't let too much water. If you drink a bowl, put two bowls of water to boil, add a proper amount of rock sugar when boiling, cook for 2~3 minutes on low heat, and turn off the heat. After cooling, pour out the juice and drink. It has the effect of resolving phlegm.

3. After fresh houttuynia cordata is cooked, the soup turns blue-black and can be drunk. After fresh houttuynia cordata is cooked, the soup turns blue-black, which may be that the green leaf element changes color after heating, so it can be taken.