wok hei en · NOUN
Etymology
Borrowed from Cantonese 鑊氣 /镬气 (wok6 hei3).
Meanings
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(uncountable) The slightly seared flavour imparted to food that has been traditionally cooked in a seasoned wok.
Seafood flavors combine with the pork stock and it's simmered until the liquid evaporates and the contents are brought just to the brink of burning, resulting in creamy-textured noodles and a magic boost of wok hei flavor.
2016, Glenn van Zutphen, Living in Singapore: Fourteenth Edition Reference Guide: