Blanch houttuynia cordata with water when it is cold, which can make the smell of houttuynia cordata itself lighter. But if you don't reject the fishy smell of Houttuynia cordata, you don't need to blanch, and the raw Houttuynia cordata can also be eaten after cleaning. In addition, it should be noted that boiled water should not be used for blanching, otherwise Houttuynia cordata will lose its crisp and tender taste.

Houttuynia cordata Thunb. is a herb included in China Pharmacopoeia. The herb comes from the dry aerial parts of Saururaceae plants. In summer, the stems and leaves are lush, and the flowers are cut for a long time, and impurities are removed and dried. Spikes are terminal, yellow-brown, and have fishy smell when crushed.