Houttuynia cordata Thunb is used as a cold dish in many places in China? Small dishes or something?

But I don't know what you mean by consuming mud. But it can be compared with houttuynia cordata. See if it's

Houttuynia cordata Thunb is still easy to recognize. Spring grows out of the soil? Purple? Green and white flowers in summer? White roots are deeply rooted? Eat more vegetables and roots? The whole grass smells of fish? Hence the name Houttuynia cordata Thunb.

Attached is a picture for you.