Cook pasta as package directs, rinse, drain and set aside. Reserve shiitake soaking liquid, discard stems and slice tops. Cook mushrooms in soaking water for 15 minutes. Heat oil, sauté broccoli and pea pods for 2 minutes. Add red pepper and garlic, sauté for 1 more minute. Add mushrooms, cooking liquid, mirin, brown rice vinegar, and shoyu. Bring to a boil. Add dissolved kuzu, stirring constantly, cook until mixture thickens and becomes clear. Serve over pasta and garnish with green onions.
Per serving - 240 calories, 3 g fat (13% calories from fat), 10 g protein, 43 g carbohydrate, 7 g fiber, 0 mg cholesterol, 438 mg sodium