Method:

1. Cut bean curd into 1/2 inch cubes. Clean mushrooms and cut into slices. Cut onions into 1 inch pieces. Cut celery into 1/2 inch diagonal slices. Remove seeds from pepper and cut pepper into 1/2 inch chunks.

2. Heat 1 tablespoon of the oil in wok over high heat. Cook bean curd in the oil, stirring gently, until light brown, 3 minutes. Remove from pan. 

3. Heat remaining 1 tablespoon oil in wok over high heat. Add mushrooms, onions, celery and pepper, Stir fry for 1 minute.

4. Return bean curd to wok. Toss lightly to combine. Blend water, cornstarch, oyster sauce, sherry and soy sauce. Pour over mixture in wok. Cook and

stir until liquid boils. Cook and stir 1 minute longer.