It is something your mother or grandmother may advise you to take when you have a cough or sore throat, but pi pa gao is not just cooling - it has also become cool.
Also called pei pa koa or pe pa gao, the traditional Chinese herbal syrup is winning fans in places as far as New York and popping up in all kinds of desserts and drinks.
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A version of this article appeared in the print edition of The Sunday Times on March 24, 2019, with the headline Soothe your throat and palate. Subscribe