Cut all fat from heat Stretch steak slightly so you can see which way the grain runs. Cut into thin strips across the grain; then cut into 2 inch length& Combine cornstarch, sugar, sherry, soy sauce and ginger in a 2 quart casserole. Add beef, stirring well to coat Microwave at medium high (70%) 7 minutes, stirring once during cooking time. Stir in celery. Microwave at medium high (70%) until celery is tender crisp, 3 to 4 minutes, stirring once during cooking time. Stir in nuts. Serve over hot rice. Makes 6 servings.