Scale

1 lb beef sirloin or flank steak, thinly sliced

2 large tomatoes, cut into wedges

1/2 onion, sliced

2 cloves garlic, minced

2 tablespoons soy sauce

1 tablespoon oyster sauce

1 tablespoon ketchup

1 teaspoon sugar

1 teaspoon cornstarch (for slurry)

1/4 cup water

1/2 teaspoon black pepper

2 tablespoons vegetable oil

1 green onion, chopped (for garnish)

In a bowl, mix the beef with 1 tablespoon soy sauce, black pepper, and 1 teaspoon cornstarch. Let it marinate for 15 minutes.

Heat 1 tablespoon oil in a pan over medium-high heat. Sear the beef until browned, then remove and set aside.

In the same pan, add another tablespoon of oil. Sauté the onions and garlic until fragrant.

Add the tomatoes and cook for 2-3 minutes until they soften slightly.

In a small bowl, mix oyster sauce, ketchup, sugar, remaining soy sauce, and water. Pour it into the pan and stir.

Return the beef to the pan and mix well. Simmer for 2-3 minutes until the sauce thickens.

Garnish with green onions and serve hot over rice.