01 -
Cut the beef into 1/2-inch thick strips across the grain to maintain tenderness.
02 -
Whisk together soy sauce, white sugar, cornstarch, and ground ginger in a bowl until smooth and sugar dissolves.
03 -
Coat the beef strips evenly with the marinade ensuring full coverage.
04 -
Heat 1 tablespoon vegetable oil in a wok or large skillet over medium-high heat. Cook beef strips in batches, stirring frequently until browned, about 3 minutes. Remove and set aside.
05 -
Return the beef to the wok and add the red onion. Toss and cook for approximately 2 minutes until onions soften.
06 -
Stir in the green bell pepper and cook for an additional 2 minutes until vibrant and tender.
07 -
Add tomato wedges and combine all ingredients in the wok to blend flavors.
08 -
Serve immediately, optionally alongside steamed rice for a complete meal.