In a field in Ha Tinh province, central Vietnam, freshly harvested mung beans are weighed on the spot and turned into cash by middlemen. In Duc Minh village, where the 2026 summer crop was a bumper harvest, dried mung beans trade at 50,000–52,000 dong per kg (about 300–315 yen), and an 'instant sellout' state continues in which middlemen come to buy at the field before farmers even look for a buyer. Mung bean is also a raw material for Japan's bean sprouts, glass noodles, and sweet-bean paste, and for Japanese sourcing managers who rely on imports for most of it, the producing area's price moves are no distant matter.
Weighed at the field, turned into cash on the spot
This producing area's strength lies in the shortness of its distribution. Put dried mung beans on the scale and a middleman buys them on the spot. Farmers need neither the labor of carrying bagged beans to market nor the time to worry about price collapse. A woman farmer growing about 3 sao (about 1,500 square meters) spoke of the reassurance of payment coming in at the moment of harvest. A bumper crop, high prices, and buyers coming to the field—all three lined up in the same summer.
Duc Minh village's 2026 summer mung-bean planting is about 110 hectares. The early growth stage was hit by heat and drought, but rain that fell at flowering aided fruit set, finishing the beans with many pods and well-filled grains. The yield itself was slightly below an average year, but the high market price made up for it, and farmers' take-home is secured.
Why 'instant sellout'?
Mung bean has a short growing period and grows even on poor, dry soil. It is, so to speak, a crop that fills the gaps of land, letting one crop be slipped in even in a season when paddies or other crops are difficult. The central-region summer in places like Ha Tinh has large swings between rain and dryness, and this year's beans, which set pods stably there, are also highly rated for quality. Tight grains mean a good yield after grading and make them easy to turn to processing. Middlemen come to the field because they want to secure this 'sureness of grain' first come, first served.
Selling out at the field is not limited to mung beans. Crops that find a buyer and sell with each harvest overlap with the spread of contract cultivation in Vietnam. The flow by which chili that sells when picked took root in a producing area (A chili that sells out as soon as it is picked: contract farming opens up Vietnamese spice raw materials) and this mung bean sit on the same economy of 'a short distance between field and buyer.'
Seen in price and yen conversion
Converting this market into yen at the July 2026 exchange rate (1 yen = about 165 dong) gives the following. For dried beans, a level of about 300-plus yen per kg is firm as a farmgate price.
| Category | Local price (VND/kg) | Yen equivalent (approx.) |
|---|---|---|
| Raw beans (just after harvest) | about 46,000 dong | about 280 yen |
| Dried beans | 50,000–52,000 dong | about 300–315 yen |
*The yen conversion is an estimate calculated at 1 yen = about 165 dong (July 2026). It is a farmgate price that does not include exchange, transport, grading, or export costs.
Japan's mung beans are almost entirely imported
Overlay Japan's circumstances here and the meaning of this producing-area news changes. Mung beans distributed in Japan are effectively all imported, with domestic production nearly nonexistent. Much of the seed has relied on China, but with falling producers the market has risen, and even bean sprouts, called 'the honor student of prices,' keep rising. Moves to seek diversified import sources are emerging, and routes to import directly from Uzbekistan and Myanmar are being built. Mung-bean sourcing is quietly steering from single-country reliance toward a multi-track approach.
Implications for bean-sprout and bean-paste raw-material buyers
Ha Tinh's mung beans are not at a scale to become 'an immediate lead' as a new raw-material source for Japan. A planting of 110 hectares is small in the eyes of an importing trading company seeking large lots. But shift the viewpoint and there is something to read. The harder China-centric mung-bean sourcing becomes to read on both cost and volume, the more Southeast Asian producing areas hold value as 'insurance for emergencies.' Vietnam eats mung beans widely at home too, with producing areas scattered across the country. If such small central-region producing areas gather into a bundle, thickness emerges as a third supply region after China and Myanmar.
The first practical thing one can do is to keep this price at hand as a yardstick. But the roughly 300-plus yen at the farmgate is a producing-area price; Japan's landed price adds drying, grading, residual-pesticide testing, transport, and export margin. On that premise, lining it up with the Chinese market shows the degree of strength as a producing area. To evaluate for bean-sprout use, the key is not whether the grain is tight but seed metrics such as germination rate, grain-size uniformity, crack rate, and moisture. Confirm those with samples, and look for a collector who can bundle drying and grading and send it to export. A producing-area design that cycles crops on poor land has real cases in other items too, such as guava (poor-sandy-soil guava earning VND 3.6 billion in annual sales, the blueprint of a Dak Lak farmer), and the 'small but sure sellout' type holds for mung beans as well.
Ripple to the market and the multi-tracking of raw-material sourcing
Mung bean has wide uses. Bean sprouts, glass noodles, sweet-bean paste, health-oriented soups and congee, and even confectionery—it is quietly used across the base of Japan's prepared-food and processing sectors. Single-point reliance on raw materials easily becomes a supply-network weakness for any item, and mung bean is no exception. The structure in which a single shift in China's harvest or export policy moves Japan's store prices has appeared many times over the past 30 years. If a central-Vietnam producing area can stably put out export-quality beans, for buyers it adds one option in price-setting. Increasing producing areas itself is insurance against price volatility.
That said, homework remains on the producing side too. As long as it sells out instantly at the field, an entity to bundle collection, drying, and grading for export is slow to grow, and if domestic demand is strong there is little reason to deliberately divert to export. If Japanese buyers show interest, continuous engagement that includes sharing drying equipment and standards—rather than a one-off purchase—more easily lifts the producing area to export quality.
Producing-area data at a glance
| Growing region | Duc Minh village, Ha Tinh province, Vietnam (central region) |
|---|---|
| Crop | Mung bean (summer crop) |
| Planted area | about 110 hectares (2026 summer crop, whole village) |
| Farmgate price | Raw beans about 46,000 dong / dried beans 50,000–52,000 dong (per kg) |
| Trade form | Middlemen come to the field and buy on site just after harvest |
| Harvest condition | Yield slightly below an average year, but take-home secured by high prices |
| Main uses in Japan | Raw material for bean sprouts, glass noodles, sweet-bean paste, soups, etc. (almost entirely imported) |
Conclusion: use a small producing area as a price yardstick
Ha Tinh's mung beans are not at a scale that can suddenly be entrusted with large regular sourcing. Even so, as a partner to build a relationship with from trial imports or small-lot inquiries, they are well within range. When reviewing mung-bean sourcing that has leaned on China, walking such small central-region producing areas early becomes an escape route at the next price-rise phase. A producing area strong enough that buyers come to the field is, flipped around, one with spare capacity to divert to export. This bumper, good-quality year is a good chance to go confirm that capacity.
References: Dân Việt
