Place water and wakame in a small saucepan and bring to a boil. Reduce the flame to low. Puree the miso with 2 teaspoons water. Add the miso and scallions. Simmer 2 minutes and serve.
Per serving - 16 calories, 1 g fat (28% calories from fat), 1 g protein, 2 g carbohydrate, 1 g fiber, 0 mg cholesterol, 449 mg sodium