Chinese broccoli (gai lan)

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Chinese broccoli, known as gai lan in Cantonese or jie lan in Mandarin, is a thick-stemmed leafy vegetable in the cabbage family prized in Cantonese cooking for its bittersweet, broccoli-pepper flavor. It is distinguished from European broccoli by its prominent stems, broader blue-green leaves, and small, rarely-eaten flower buds.

CategoryVegetables
Scientific nameBrassica oleracea var. alboglabra
OriginSouthern China and Southeast Asia

History & Origins

Chinese broccoli has been cultivated in southern China since at least the Song dynasty (960–1279 CE) and is depicted in agricultural texts of the Ming era, where it was grown alongside other leafy Brassicas in the Pearl River Delta. Botanically it represents an independent Asian lineage within B. oleracea, likely derived from ancestral kales that reached China via trade routes. It became a staple of Cantonese cookery and was carried by emigrant communities across Southeast Asia, North America, and Europe in the 19th and 20th centuries.

Nutrition Facts

Per 100 g, edible portion (estimated)

  • 22 kcalCalories
  • 2.4 gProtein
  • 0.4 gFat
  • 3.7 gCarbs
  • 2.7 gFiber
  • 0.8 gSugars
  • 245 mgPotassium
  • 62 mgVitamin C
  • 490 mcgVitamin A

Culinary Uses

  • Blanched briefly and drizzled with hot oyster sauce, the classic Hong Kong preparation
  • Stir-fried with garlic and a splash of Shaoxing wine until stems are tender-crisp
  • Added to noodle soups, congee, and wonton broths for color and bite
  • Steamed whole and served with hoisin or chili-garlic sauce in dim sum and home cooking

Known Benefits

  • Excellent source of vitamin C and provitamin A carotenoids
  • Provides plant-based calcium and bioavailable iron for bone and blood health
  • Contains glucosinolates such as glucoraphanin linked to detoxification pathways

Hidden Benefits

  • Leaves hold more lutein and beta-carotene than the stems, supporting eye health
  • The thick stems are rich in soluble fiber that helps moderate blood sugar response
  • Saponins in the foliage exhibit mild cholesterol-binding activity in laboratory studies

Cautions & Considerations

  • Raw leaves contain goitrogens; those with thyroid issues should cook before eating
  • Contains vitamin K which may interact with anticoagulant medications like warfarin
  • Pesticide residue is common on leafy brassicas, so washing or sourcing organic is advisable