Zhe'ergen is often served as a cold salad after being washed, diced and tossed with sauces derived from vinegar, chilli, coriander and soy sauce.
Zhé'ěrgēn (Chinese: 折耳根) is the edible rhizome of Houttuynia cordata (Yuxingcao, 鱼腥草) with a fresh, spicy, peppery flavour that is used in southwestern Chinese cuisine, ie. that of Guizhou, Sichuan, Yunnan and western Guangxi.
Notable uses include:
The leaves are also a little peppery and are frequently consumed in the region.