#i was in a gelato shop today and realised they were both out of pistachio and i also didn't know how to say it

[xiangqiankua]

Word of the day:

開心果 / pistachio nut

Why is it called that? Wikipedia says:

開心果（學名：Pistacia vera，英語：pistachio）是一種常見乾果，正式名稱為阿月渾子，是漆樹科黃連木屬的植物。開心果營養豐富，味道可口，是很受歡迎的零食。最早的漢語商品名是開口笑，形容其硬殼裂開如笑容之狀，但迅速被更口語化的開心果取代。富含維生素A、維生素E。