Need synonyms for choy sum? Here's a list of similar words from our thesaurus that you can use instead.
Noun
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
“Though the tender young flower shoots of any of the Asian brassicas can be delicious, choy sum types have been developed especially for their flower stalks and buds.”