PREPARATION:
- Heat 1 tablespoon oil in wok or large skillet over high heat. Add tofu and stir-fry until light brown, about 3 minutes. Remove and set aside. Combine water, oyster sauce, sherry, soy sauce and cornstarch in small bowl until smooth. Heat remaining 1 tablespoon oil in wok over high heat. Add mushrooms, green onions, celery and bell pepper; stir-fry 1 minute. Return tofu to wok; toss lightly to combine. Stir oyster sauce mixture and add to wok. Cook and stir until liquid comes to a boil; cook 1 minute more.
