Choy sum

Leafy vegetable

Choy sum (also spelled choi sum or choi sam in Cantonese; caixin (Chinese: 菜心; pinyin: càixīn) in Standard Mandarin) is a leafy vegetable commonly used in Chinese cuisine. It is a member of the genus Brassica of the mustard family, Brassicaceae (Brassica rapa var. parachinensis or Brassica chinensis var.

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