Winged Bean: The Unique Vegetable Found in Traditional Markets Across Indonesia

If you visit a traditional market in Indonesia, especially on the islands of Java or Bali, there is a good chance you will come across bundles of fresh winged beans. Their bright green pods, with four distinctive frilly edges running along each side, make them easy to recognize among the many vegetables on display. They are inexpensive, widely available, and have long been part of everyday cooking in Indonesian households.

Winged beans are not only common in markets. If you take a walk through villages or rice fields, you may also notice the climbing vines growing along bamboo trellises, wooden fences, or simple garden supports. In many rural areas, families grow winged beans in their home gardens because the plants are easy to cultivate in tropical climates and produce generous harvests throughout the growing season.

Personally, I have never been a big fan of winged beans. I find their flavor a little grassy, and the pods have a firm, crunchy texture that isn't my favorite. However, as I grew older, I began to appreciate why so many people enjoy them. Their crisp bite works wonderfully in fresh salads and stir-fries, and they absorb seasonings surprisingly well. Like many traditional vegetables, winged beans are often an acquired taste that becomes more enjoyable when prepared with the right ingredients.

What Is a Winged Bean?

Winged bean (Psophocarpus tetragonolobus) is a tropical climbing legume native to New Guinea and Southeast Asia. It belongs to the pea family (Fabaceae), making it a close relative of green beans, snow peas, and soybeans. Its most distinctive feature is the pod itself, which has four wing-like ridges running from end to end. These "wings" give the vegetable its common English name and create an attractive appearance unlike any other bean.

Unlike many vegetables that are harvested for only one edible part, nearly every part of the winged bean plant can be eaten. The young pods are the most commonly consumed, but the leaves, flowers, seeds, and even the underground tubers are edible. Because of this remarkable versatility, winged bean is sometimes referred to as one of the world's most useful vegetable crops.

A Nutritious Vegetable

Winged beans are valued not only for their versatility but also for their impressive nutritional content. The young pods provide dietary fiber, vitamin C, vitamin A, folate, calcium, magnesium, and iron while remaining relatively low in calories. As the seeds mature, they become increasingly rich in protein, containing levels comparable to soybeans. This high protein content has attracted the attention of agricultural researchers for decades, particularly in tropical regions where nutritious crops are essential for food security.

The leaves are also nutritious and can be cooked much like spinach. Meanwhile, the underground tubers contain carbohydrates and protein, making them another valuable food source. Few vegetables offer as many edible and nutritious parts as the winged bean.

Is Winged Bean Only Found in Indonesia?

Although many Indonesians grow up eating winged beans, the vegetable is by no means unique to Indonesia. It is widely cultivated across tropical Asia and the Pacific.

In Malaysia, winged beans are known as kacang botol and frequently appear in sambal dishes and fresh salads. In Thailand, they are called thurapu and are commonly served raw with spicy dipping sauces or sliced into salads such as yum thua phlu. In the Philippines, they are known as sigarilyas and are often added to soups, stews, and vegetable dishes. They are also grown in Vietnam, Papua New Guinea, India, Sri Lanka, and many tropical regions of Africa, where the plant adapts well to warm temperatures and abundant rainfall.

Outside tropical countries, winged beans are less common, although they can sometimes be found in Asian supermarkets or specialty produce stores. As interest in sustainable agriculture grows, researchers have continued studying winged beans because of their excellent nutritional value and ability to thrive in challenging growing conditions.

A Vegetable That Supports Sustainable Gardening

One reason gardeners appreciate winged beans is their ability to improve the soil naturally. Like many legumes, the plant forms a relationship with beneficial bacteria that capture nitrogen from the atmosphere and convert it into a form plants can use. This natural process enriches the soil, reducing the need for synthetic fertilizers and making winged beans an excellent companion crop in home gardens.

The vines grow vigorously and can climb several meters when provided with support. Their attractive lavender-blue flowers also make them an ornamental addition to vegetable gardens before the pods begin to develop.

Cooking with Winged Beans

One of the reasons winged beans remain popular throughout Southeast Asia is their versatility in the kitchen. Young pods can be eaten raw, lightly blanched, stir-fried, grilled, or added to curries and soups. Their crisp texture makes them especially enjoyable in fresh dishes where they retain a pleasant crunch.

When cooked, winged beans have a mild, slightly nutty flavor that pairs well with garlic, shallots, chilies, shrimp paste, coconut milk, peanuts, and soy-based seasonings. They also complement grilled seafood, tofu, tempeh, and a variety of meats.

Because the pods are naturally crisp, they are best cooked only briefly. Overcooking can cause them to lose their vibrant green color and satisfying texture.

More Than Just a Garden Vegetable

Winged beans may not receive as much international attention as broccoli, asparagus, or green beans, but they deserve recognition for their remarkable versatility and nutritional value. In many Indonesian households, they are simply another everyday vegetable purchased from the local market without much thought. Yet behind this humble appearance is a fascinating plant that offers food from its leaves, flowers, pods, seeds, and roots.

For travelers exploring Indonesia, seeing winged beans stacked neatly at traditional markets or growing beside rice fields offers a glimpse into everyday rural life. They remind us that some of the most interesting foods are not expensive or exotic but are simply part of local traditions passed down through generations.

Although winged beans are not my personal favorite vegetable, I have come to appreciate their importance. They are affordable, nutritious, easy to grow, and deeply rooted in the culinary traditions of many tropical countries. Whether enjoyed raw in a spicy salad, stir-fried with garlic, or simmered in a rich coconut curry, winged beans continue to prove that even the simplest vegetables can have an extraordinary story.

Popular Dishes That Use Winged Beans

Instead of one signature recipe, winged beans appear in many traditional dishes throughout Southeast Asia. Here are some popular examples:

• Pecel (Indonesia) – Fresh or lightly blanched winged beans served with a rich peanut sauce alongside other vegetables.

• Urap (Indonesia) – Steamed winged beans mixed with seasoned grated coconut, herbs, and spices.

• Lalapan (Indonesia) – Raw winged beans served as fresh vegetables with sambal and fried fish or grilled chicken.

• Yum Thua Phlu (Thailand) – A flavorful salad made with sliced winged beans, shrimp, coconut milk, peanuts, lime juice, and chilies.

• Ginataang Sigarilyas (Philippines) – Winged beans simmered in creamy coconut milk with garlic, onions, and sometimes shrimp or pork.

• Kacang Botol Sambal Belacan (Malaysia) – Fresh winged beans served with spicy shrimp paste sambal.

• Vegetable Stir-Fry – Common throughout Southeast Asia, where winged beans are quickly stir-fried with garlic, chilies, oyster sauce, or soy sauce while retaining their signature crunch.