Winged Bean: The Four-Cornered Pod in Yam Thua Phu

Winged Bean — ถั่วพู (too-a-poo) — Psophocarpus tetragonolobus.

Slice a young pod crosswise and it falls into little four-cornered stars, each edge frilled like a green ruffle, crisp enough to snap raw into a chili-paste plate. The pod brings plant protein, vitamin C, folate, iron, and calcium, and the same vine gives up leaves, flowers, and starchy tubers. The part on your plate is the young, glossy pod. On the plate, winged bean is a crisp, protein-rich pod — snapped raw into a chili-paste salad, four-cornered stars and all. One kitchen rule: the young pods go in raw, but the mature dried seeds behave like kidney beans, so soak and cook those through first.

Yam Thua Phu — ยำถั่วพู (yam-tua-poo)
Pad Thua Phu — ผัดถั่วพู (pad-tua-poo)

Food and nutrients

Rich in: protein, Vitamin C, folate, iron, calcium

Research context

Winged bean extracts scavenged free radicals and calmed inflammatory markers in cultured cells — Molecules, 2021

Sources

Source: Antioxidant and anti-inflammatory activity of winged bean, in vitro (RAW264.7 cells): Molecules 2021; PMID 34361588; DOI:10.3390/molecules26154435. Seed protein composition: Journal of Food Quality 2019; DOI:10.1155/2019/3075208. Antinutrients and cooking: Legume Science 2023 (Bepary et al.); DOI:10.1002/leg3.187.

Narration transcript

Opening

Slice this pod crosswise and it falls into perfect little four-cornered stars, each edge frilled like a green ruffle. Winged bean — ถั่วพู, too-a-poo. Growers call it a supermarket on a stalk, because nearly every part feeds you: the pods, the leaves, the flowers, the seeds, even the starchy underground tubers. The part on your plate is usually the young, glossy pod, snapped raw or blanched into a chili-paste salad.

Yam Thua Phu (ยำถั่วพู)

For yam tua poo, Thai cooks blanch the star-cut pods and toss them with roasted-chili paste, coconut milk, lime, and shrimp, finished with fried shallots and crushed peanuts. Eat it with steamed rice.

Pad Thua Phu (ผัดถั่วพู)

In pad tua poo, sliced pods hit a hot wok with garlic and pork, cooked just until bright green and crisp-tender. Spoon it over rice.

Nutrition summary

Unusual for a fresh pod, winged bean offers real protein, plus a good amount of vitamin C and folate.

Protein

Protein contributes to the growth and maintenance of muscle, helps repair body tissues, and helps you feel full and satisfied.

Vitamin C

Vitamin C is used to build collagen and helps protect cells from oxidative stress.

Folate

Folate supports normal cell division and blood formation, and plays an especially important role before and during pregnancy.

Iron

Iron is part of hemoglobin, the protein that carries oxygen in your blood, and it supports normal energy metabolism.

Calcium

Calcium is needed to maintain normal bones and teeth, supports normal muscle and nerve function, and contributes to normal blood clotting.

Closing

On the plate, winged bean is that crisp, four-cornered pod, snapped fresh into yam thua phu with roasted chili paste. One kitchen rule: the young pods go in raw, but the mature dried seeds act like kidney beans, so soak and cook those all the way through before eating. Follow Longevity Biome, and LIKE this video for regular updates.

Related playlists