Black Pepper Steak

Name: Black Pepper Steak
Ingredients: 8 oz (250 g) beef tenderloin, flank steak or flap meat, cut into pieces; 2 ½ tablespoons cooking oil; 1 clove garlic, minced; One 1 in (2.5 cm) piece fresh ginger, peeled and sliced; ½ small green bell pepper, deseeded and cut into pieces; ½ small red bell pepper, deseeded and cut into pieces; ½ onion, cut into strips; 1 teaspoon freshly ground black pepper; Salt, to taste; 1 ½ teaspoons Maggi seasoning sauce; ½ teaspoons soy sauce; ½ teaspoon dark soy sauce; 1 teaspoon oyster sauce; 1 teaspoon Worcestershire sauce; 1 teaspoon Chinese rice wine or sherry; ½ teaspoon cornstarch; ½ teaspoon sesame oil; ½ teaspoon sugar