The recipe for Nin Jiom Pei Pa Koa hasn’t changed since it was first concocted in the 1600s. Yet the sweet syrup is enjoying a renewed surge in popularity https://www.economist.com/business/2025/08/14/a-400-year-old-chinese-cough-syrup-is-winning-over-westerners?taid=69e09710ba4ee50001edf83c&utm_campaign=editorial-social&utm_content=discovery.content&utm_medium=social-media.content.np&utm_source=voante