choy sum

English

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Etymology

Borrowed from Cantonese 菜心 (coi3 sam1, literally vegetable heart). Doublet of caixin.

Noun

choy sum (uncountable)

  1. A Chinese vegetable, a variety of Brassica rapa parachinensis subspecies, similar to bok choy but slimmer, with smooth green leaves and pale green stems, and clusters of flowers on the tips of the inner shoots.
    • 2013, Fuchsia Dunlop, “Stir-fried chopped choy sum”, in Every Grain of Rice: Simple Chinese Home Cooking, W. W. Norton & Company, →ISBN, page 178:
      Added the chopped choy sum and stir it to release any excess water as steam. As the choy sum loses its water, add the chili and a good pinch of salt.

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