- Season
- Available year-round, with peak quality in cool spring and autumn conditions.
- Price
- Low
- Nutrition per 100 g
- 17 kcal
- 1 g protein
- 0.2 g fat
- 3.5 g carbs
Pak Choi
Vegetables
Pak Choi
Pak choi, also known as bok choy or Brassica rapa subsp. chinensis, is a non-heading Chinese cabbage characterized by smooth, spoon-shaped leaves and succulent pale stems.
In practice
How to store
- On the counter
Not recommended, as pak choi rapidly loses moisture and crispness at room temperature.
- In the fridge
Store unwashed in a perforated bag in the crisper drawer for up to five days.
- In the freezer
Possible only after blanching, though texture softens considerably and is best suited to soups.
How to choose
Choose pak choi with firm, unblemished stems and leaves that are glossy, taut, and deeply green. Avoid specimens with yellowing leaves, excessive wilting, or watery brown patches at the base, which indicate age or poor handling.
What to swap in
Best swap
Young napa cabbage, offering a similar balance of sweetness and tenderness.
In a pinch
Swiss chard stems and leaves cooked separately to mimic textural contrast.
Preparation
Rinse thoroughly to remove grit trapped at the base. Trim the root end and separate stems if even cooking is desired, as the stalks require slightly longer heat than the leaves.
Don't toss it
The trimmed base and tougher outer leaves can be added to vegetable stocks, contributing sweetness and mineral depth.
In the kitchen
Cooking
Pak choi responds best to quick, high-heat methods such as stir-frying and blanching, which preserve its crunch and color. Gentle braising highlights its sweetness, while raw applications, when leaves are young, emphasize freshness.
Goes well with
- Ginger
- Garlic
- Soy Sauce
- Sesame Oil
- Oyster Sauce
- Mushrooms
- Rice Wine
What it is
Pak choi, also known as bok choy or Brassica rapa subsp. chinensis, is a non-heading Chinese cabbage characterized by smooth, spoon-shaped leaves and succulent pale stems. Unlike European cabbages, it does not form a tight head, instead growing as a loose rosette that emphasizes immediacy, tenderness, and clarity of flavor.
How it tastes
The flavor of pak choi unfolds with a clean vegetal attack, recalling cucumber skin and young spinach. The mid-palate is gently sweet and aqueous, with a faint brassica bitterness that never dominates. The finish is cooling and mineral, leaving a refreshed palate rather than the sulfurous persistence associated with mature cabbages.
Common questions
Is pak choi the same as bok choy?
Can pak choi be eaten raw?
Why does pak choi sometimes taste bitter?
Deep dive
3 min read
Varieties
Pak choi exists not as a single uniform vegetable but as a family of cultivars shaped by climate, soil, and culinary intent.
Green-stemmed pak choi
Green-stemmed (Shanghai) pak choi, grown widely in eastern China and now common in markets worldwide, is usually harvested 40 to 60 days after sowing. It offers a balanced flavor with crisp stems and softly grassy leaves.
White-stemmed pak choi
Distinguished by thick, ivory petioles, this type is the classic pak choi of southern China. The stems are notably juicy and sweet, with a mildness prized in Cantonese cookery.
Baby pak choi
Grown at high density and harvested early, often by hand, this form concentrates tenderness and delicacy. Its flavor is sweeter and less bitter, with a subtle nuttiness that reflects minimal lignification.
Across all types, terroir plays a decisive role. Cooler nights enhance sugar accumulation, while excessive heat accelerates bitterness. Careful irrigation ensures succulence, as water stress quickly translates into fibrous stems.
History
The history of pak choi is inseparable from the agricultural and culinary evolution of East Asia.
Ancient era
Brassica rapa was probably first domesticated in Central Asia and reached China in antiquity, where the non-heading leafy forms that gave rise to pak choi were developed. Leafy brassicas known as song (菘) appear in Chinese texts from the early centuries CE, valued for their rapid growth and resilience.
Medieval era
During the Tang and Song dynasties, leafy brassicas of the pak choi type were widely grown across China and developed into distinct local forms. Its mildness suited the increasingly refined cooking of the period.
Modern era
From the nineteenth century onward, migration carried pak choi to Southeast Asia, Europe, and the Americas. In the twentieth century, it became emblematic of Chinese diaspora cooking, later entering global markets as interest in quick-cooking vegetables grew. Today it is grown worldwide, from hydroponic urban farms to traditional field plots.
Science
Pak choi’s tenderness is rooted in its cellular structure, which favors thin cell walls and high water content. Glucosinolates, present at lower concentrations than in mature cabbages, account for its restrained bitterness and mild brassica aroma. Chlorophyll abundance drives its vivid green color, while its low oxalate content sets it apart from spinach and chard. Its crunch when fresh comes from turgid, water-filled cells, while rapid growth limits lignification and keeps the stems tender rather than fibrous.
Sourcing and ethics
Responsibly sourced pak choi should be grown with attention to water use and soil health, as shallow roots make it sensitive to both drought and nutrient depletion. Local cultivation reduces post-harvest wilting and nutrient loss. Organic systems, when well-managed, limit nitrate accumulation and promote biodiversity, though careful pest control is essential due to the plant’s vulnerability to flea beetles and aphids.