01 - Combine the beef, 1 tbsp soy sauce, cornstarch, and sesame oil in a bowl. Mix well and let rest for 10 minutes.
02 - Heat 1 tbsp vegetable oil in a wok or large skillet over high heat. Stir-fry the beef for 1–2 minutes until browned. Remove and set aside.
03 - Add the remaining 1 tbsp vegetable oil to the pan. Stir-fry garlic, ginger, and scallion whites for 30 seconds until fragrant.
04 - Add diced carrots and bell pepper; stir-fry for 2–3 minutes until slightly tender. Stir in peas and cook for 1 more minute.
05 - Push vegetables aside, pour beaten eggs into cleared space and scramble until just set. Combine eggs with vegetables.
06 - Incorporate chilled rice, breaking up clumps and stir-frying for 2–3 minutes to combine thoroughly.
07 - Return beef to the pan, add soy sauce, oyster sauce, toasted sesame oil, and white pepper if using. Toss to coat and heat through for 1–2 minutes.
08 - Remove from heat, sprinkle scallion greens over the top, and serve immediately.