The feathery green leaves and stems of fennel. They are chopped into fillings for dumplings, buns and flatbreads, and the tender leaves are eaten raw in salads. The dried seeds are the spice 小茴香.
茴香 is used two ways in Chinese cooking: the seeds, also called 小茴香, go into 五香粉 (five-spice powder), and the feathery greens into northern dumpling fillings (茴香馅饺子).