Tofu Steak with Japanese Mushrooms

To make the broth, combine the mirin, dashi, soy sauce, and salt in a small saucepan over medium heat. In a bowl, whisk together the cornstarch and water. Bring the broth just to a boil, then slowly whisk in the cornstarch mixture until the broth thickens slightly. Remove from the heat and set aside. (Note: The broth can be made up to 1 day in advance and stored in the refrigerator; reheat when ready to use.)

To prepare the tofu, heat an 11-inch nonstick sauté pan over medium heat. Add 1 tablespoon of the sesame oil. Lightly dredge the tofu pieces in the cornstarch and place in the hot pan. Cook until golden brown, 2 1/2 to 3 minutes per side. Remove from the pan.

Using the same pan, add the remaining 1 tablespoon sesame oil, then the celery, red onion, carrot, shiitake mushrooms, shimeji mushrooms, and enoki mushrooms. Cook over high heat until the vegetables become soft, about 2 minutes, then add half the broth and cook for 30 seconds longer. Remove from the heat.