1 tablespoon packed brown sugar,
1 tablespoon cornstarch,
3/4 cup water or vegetable broth,
3 tablespoons rice wine vinegar,
2 tablespoons soy sauce,
1 tablespoon vegetable oil,
3/4 pound uncooked medium shrimp, peeled and deveined,
1 tablespoon minced fresh ginger,
2 cloves garlic, minced,
1/4 teaspoon crushed red pepper,
1 package (about 3.5 ounces) sliced shiitake mushrooms,
1 large red bell pepper, cut into thin strips,
3 green onions, finely chopped