Chinese Long Beans (Yard-Long Beans / Snake Beans / Dau Gok / Bora)

What it is

Extremely long, slender green beans — often 30–75 cm (a foot to a yard-plus) — sold in coiled bundles. Despite the resemblance, they are not common green beans (Phaseolus) but a subspecies of cowpea (Vigna unguiculata subsp. sesquipedalis), the same species as black-eyed peas. "Chinese long bean" and "yard-long bean" are essentially the same vegetable; color varies from pale jade to dark green to deep purple-red by cultivar.

How it's made

Climbing tropical/subtropical legume, harvested while immature and pliable, before the seeds swell. Sold fresh; best used within a few days.

Flavor profile

Beanier, denser, and chewier than a common green bean, with a slightly nutty, earthy flavor and almost no "snap" juiciness — the texture is meant to absorb sauce and char. Less sweet, less watery, more robust.

Culinary uses

Cut into batons and cooked hot and fast. The classic Sichuan dry-fried green beans (gan bian si ji dou) blisters them in oil with preserved mustard greens, pork, garlic, and chili. They are stir-fried with fermented bean curd or shrimp paste; added to Thai red and green curries and pad prik king; folded into Filipino pinakbet and Indian thoran. Thai som tam sometimes includes raw cut lengths. Unlike snap beans, they should not be boiled limp — they're at their best charred or quick-cooked.

Regional variations

The dark-green Chinese type and the paler, longer Southeast Asian type are interchangeable. A red-purple variety turns green when cooked. In the Caribbean and Guyana the same bean is bora; in West Africa related cowpea greens and pods are eaten.

Cultural & historical context

A cowpea of likely African and South Asian origin, spread across tropical Asia where the immature pods (rather than the dried seeds) became the prized part. Cheap, productive, and heat-tolerant, it is an everyday market vegetable across southern China and Southeast Asia.

Reference notes

• Tags: `vegetable`, `legume`, `bean`, `chinese`, `thai`, `stir-fry`, `summer`
• Related ingredients: fermented black beans, shrimp paste, preserved mustard greens, makrut lime
• Related cuisines: Chinese (Sichuan, Cantonese), Thai, Filipino, Caribbean
• Suggested links: [Okra], [Drumstick (Moringa)], [Bitter Melon]