Black pickled rutabaga 玫瑰大头菜 (méi guì dà tóu cài)

A pickled root similar to a turnip, it is usually finely chopped in dishes and used as a flavoring agent instead
of a main ingredient. It is extremely salty, so rinse it well before cooking with it. It can be bought fresh or vacuum packed at Asian grocery stores. You may substitute Chinese pickled mustard greens.