Tankuro Japanese Black Soybean Seeds – Certified Organic Edamame & Dried Bean

Japan’s Most Prized Heirloom Soybean — Sweet, Creamy, and Deeply Nutritious

Tankuro Black Soybeans are a celebrated Japanese heirloom — known as edamame when harvested green and Mao Dou in China. This certified organic, non-GMO variety is prized for its exceptionally sweet, creamy flavor that sets it apart from ordinary soybeans. Harvested young, the immature beans are brilliant green with distinctive purple splotches; left to mature, the pods dry to reveal striking black-coated beans with a vivid green interior. High in protein, fiber, iron, and calcium, Tankuro is a staple in Korean health cuisine and an outstanding choice for home growers seeking a dual-purpose bean.

Highlights

• Certified organic, non-GMO — heirloom Tankuro variety
• Sweet, creamy flavor — exceptional fresh as edamame
• Dual harvest: green edamame or dried black beans
• High in protein, fiber, iron, and calcium
• Warm season annual; matures in approx. 100 days
• Planting season: Late spring | Approx. 300 seeds per packet
• Bush habit — no staking or support needed

In the Kitchen

Harvest immature pods while beans are bright green for fresh edamame — boil in salted water and enjoy as a snack or side. Allow pods to dry fully for black soybeans: use in Asian bean dishes, veggie burgers, soymilk, tofu, and tempeh. Dried Tankuro beans are prized in Korea for their health benefits and rich flavor.

Growing Guide

• Plant: Late spring after soil warms; grows like any other bush bean
• No staking needed — compact bush habit suitable for containers and small gardens
• Direct sow only — soybeans do not transplant well due to shallow roots
• Soil: Well-drained, moderately fertile; soybeans fix their own nitrogen
• Harvest green when pods are plump and bright with purple splotches; harvest dry when pods turn brown and rattle