Brown rice becomes a protein-filled vegetarian dish when steamed with tofu and spinach.
Stir together rice, 3 cups water, the mushrooms, tofu, ginger, garlic, chile, and salt in the bowl of a rice cooker. Cover with lid, and cook until machine switches to the warm setting (about 45 minutes). Let rice stand 15 minutes to finish steaming.
Stir in spinach. Cover, and let steam 1 minute with machine still on warm. Stir in scallions, cilantro, soy sauce, vinegar, and sesame oil. Serve immediately.