Outside East Asia, the dish is most often found in Japanese restaurants and some Chinese restaurants, but has also found popularity elsewhere as a healthful food item.
The Japanese name literally means "twig bean" (eda = "twig" + mame = "bean"), and is a reference to the short stem attached to the pod. This term originally referred to young soybeans in general. Over time, however, the prevalence of the salt-boiled preparation meant that the term edamame now often refers specifically to this dish.
To make this spicy roasted edemame I mix minced garlic, red chili sauce, black pepper, celery salt, onion powder, dried basil and olive oil. The exact measurements are not that important, give it a taste test to check for spiciness.
Here is a general rule of thumb:
1 1/4 cups frozen shelled edamame (green soybeans), thawed
2 teaspoons olive oil
1/2 teaspoon chili powder
1/4 teaspoon dried basil
1/4 teaspoon onion powder
1/4 teaspoon ground cumin
1/8 teaspoon paprika
1/8 teaspoon ground black pepper
These soy beans were already cooked, they were purchased ready to eat in the produce section of my grocery store. After I combined the ingredients, I dumped the mixture on the pods that I spread out on a rimmed baking sheet.
With the oven pre-heated to 350, I tossed the soybean pods with the dressing.
Arrange the beans in a single layer and roast, uncovered, at 350 for 12 to 15 minutes, stirring once. Serve as a vegetable side dish or as a snack. Refrigerate any leftovers.
I like to steam soybeans when I get home from work, and munch on them while I cook dinner. They are a light and healthy nosh that keeps me from woofing down dinner when it is ready. This dressing really provides a KICK to my usual snack - it helps me get more water in for sure.
You can find these in several areas of most grocery stores. I've purchased them frozen in a bag in the freezer aisle, sometimes just the soybeans, and sometimes they are in the pods. You can also sometimes find these in the produce section where all the health-nut food is like tofu, etc.
I like to buy them in the pods, so it becomes an "activity" to eat these. I think of them like pistachios. If I sit down with already shelled pistachio nuts, I could probably eat two pounds in one sitting because they are so easy to pop in my mouth by the handful. If I buy the pistachio nuts that are in their shell, it becomes a little work to crack the shell and eat the nut - thus slowing me down a little.