chīm yúh béng
Fortune cookies are ubiquitious in Chinese-American restaurants and can be found in bakeries and grocery stores (but I've never seen one in Hong Kong).
History
There's debate whether fortune cookies are of Chinese-American or Japanese-American origin, and whether they originated in San Francisco or Los Angeles, but either way, it could be claimed they derive from Japan in the form of tsujiura senbei, notes baked into crackers.