Step 1

In a bowl, mix the garlic, soy sauce, sherry, sugar, pepper and 1 teaspoon of the oil. Add the meat and coat well. Cover and let stand at room temperature for 2 hours or refrigerate overnight.

Step 2

In a small bowl, mix the stock, oyster sauce and cornstarch. In a large skillet, heat 1/2 tablespoon of the oil. Add half of the meat and cook over high heat until browned on 1 side, about 1 minute. Transfer to a plate. Repeat with 1/2 tablespoon of the oil and the remaining meat.

Step 3

Add the onion and the remaining 1 teaspoon of oil to the skillet and cook over moderate heat, stirring until softened, about 3 minutes. Add the bell peppers and cook over moderately low heat, stirring, until crisp-tender, about 6 minutes. Stir the stock mixture, then pour it into the skillet and simmer over moderate heat, stirring, until it starts to thicken, about 2 minutes. Return the meat to the skillet and simmer until heated through. Remove from the heat. Stir in the chili-garlic paste, sesame oil and basil and serve