What are Shelled Soybeans? The Basics of Edamame
Shelled soybeans are more commonly known as edamame. Edamame are immature soybeans harvested before they harden and dry. The term 'shelled' refers to the removal of the beans from their inedible pods. These beans are valued for their mild, nutty flavor.
Edamame has been a staple in East Asian cuisine for centuries and has become popular globally as a healthy protein source. You can usually find them in the frozen vegetable section of grocery stores, either shelled or in the pod.
Maturity Matters
The key difference between shelled soybeans (edamame) and mature soybeans is the harvest time. Mature soybeans are left on the plant to dry, becoming a tan color and developing a harder texture. These are the soybeans used to make soy oil, soy sauce, and tempeh. Shelled edamame are harvested green and have a tender texture, suitable for eating whole.
Nutritional Value of Shelled Soybeans
Shelled soybeans are nutrient-rich, offering significant protein, fiber, and vitamins. They contain all nine essential amino acids, making them a complete protein source, unusual for plant-based foods.
Here is a breakdown of the nutritional benefits, based on a 160-gram (1 cup) serving of cooked, shelled edamame:
- Protein: Approximately 18.5 grams.
- Fiber: Around 8 grams, aiding digestion.
- Folate: Over 100% of the daily value, essential for cell growth.
- Vitamin K: Over 30% of the daily value, vital for blood clotting and bone health.
- Other Nutrients: Good source of iron, potassium, magnesium, and vitamin C.
Culinary Applications for Shelled Soybeans
Shelled soybeans are versatile in the kitchen. Their green color and delicate flavor enhance various dishes. They are often steamed or boiled and seasoned with salt as a snack.
Diverse Culinary Uses
- Salads and Bowls: Add color, texture, and protein to salads and grain bowls.
- Stir-Fries and Soups: Add them to stir-fries towards the end of cooking. They also work in soups and stews.
- Dips and Spreads: Blend cooked shelled edamame with tahini, lime juice, and garlic to create a protein-rich dip.
- Pasta and Side Dishes: Toss with pasta or use in place of lima beans in succotash.
- Spicy Snack: Combine cooked beans with chili powder, lime juice, and salt for a snack.
Shelled vs. Unshelled Soybeans: A Comparison
Both shelled and unshelled soybeans are the same product—immature green soybeans—but differ in how they are bought and eaten. The table below compares these two forms.
| Feature | Shelled Soybeans (Mukimame) | Unshelled Soybeans (Edamame) |
|---|---|---|
| Convenience | Very convenient, only requires cooking/thawing. | Requires shelling manually. |
| Texture | Tender and ready to eat. | The pod adds a slight crunch. |
| Serving | Best for recipes like stir-fries and dips. | Ideal for snacking and appetizers. |
| Flavor | Concentrated, nutty flavor. | Milder flavor, seasoning on the outside. |
| Cost | Usually more expensive. | Generally cheaper, but you pay for the inedible pods. |
Health Benefits of Eating Shelled Soybeans
Shelled soybeans offer several health benefits.
- Heart Health: Soy protein can help lower LDL ('bad') cholesterol.
- Diabetes Management: Edamame has a low glycemic index and high fiber, which can help regulate blood sugar.
- Bone Health: Isoflavones in soy may slow bone loss.
- Gut Health: The fiber supports a healthy digestive system and gut microbiome.
How to Cook Shelled Soybeans
Cooking shelled soybeans is quick, especially with frozen varieties. Follow package instructions, but here are common methods:
Steaming or Boiling
- Boil water, adding salt if desired.
- Add frozen shelled soybeans and cook for 3–5 minutes until tender.
- Drain and serve warm or chilled.
Microwaving
- Place frozen shelled soybeans in a microwave-safe bowl.
- Add a splash of water.
- Cover and microwave for 2–3 minutes.
Sautéing
- Heat oil in a skillet.
- Add frozen shelled soybeans and cook for 5–7 minutes, stirring until heated and slightly browned.
Conclusion
Shelled soybeans, or edamame, are the tender, young beans of the soybean plant. They are a convenient source of plant-based protein, fiber, and essential nutrients. Their potential benefits make them a valuable addition to a balanced diet. Their wide availability makes them a great option for boosting nutritional intake.
For more information on the history and cultivation of soybeans, explore resources from the Missouri Soybeans organization.