贡菜 literally means 'tribute vegetable' — the
苔干 (dried celtuce stalk) from
涡阳/
蒙城 in Anhui's Bozhou region was sent as tribute to the Qing imperial court, earning the name. The stalks are split, sun-dried, and rehydrated before eating — springy and celery-like, famous for showing up on hot-pot menus as a crunchy dipping vegetable.