Small, oblong, pale greenish-grey seeds with a sweet, licorice-like smell, used in braised beef, beef noodle soup and five-spice powder. The leafy tops of the same plant, 茴香, fill dumplings and buns.
Add a few fennel seeds when stewing meat to remove the gamey taste.
Tips
usage
小茴香 = fennel (Foeniculum vulgare), the small fragrant seed used as a spice. Don't confuse with 大茴香 / 八角 (star anise), a much larger pod. Both belong to the 茴香 family by name but they're botanically unrelated.