What is a chin goo?

A chin goo, also known as "chin gu," refers to a traditional Chinese dish made from pickled vegetables, often including radishes or cabbage, that are fermented and seasoned with various spices. It is commonly served as a side dish or condiment, adding a tangy and savory flavor to meals. The term can also refer to the process of fermenting vegetables, which is a staple in many Asian cuisines for enhancing flavors and preserving food.