01 - Combine beef with soy sauce, cornstarch, and sesame oil in a medium bowl. Toss well and let marinate for 10 minutes.
02 - Mix all sauce ingredients in a small bowl and set aside.
03 - Heat 1 tbsp vegetable oil in a large wok or skillet over high heat. Add beef in a single layer and sear 1–2 minutes per side until browned. Remove and set aside.
04 - Add remaining 1 tbsp vegetable oil to wok. Stir-fry garlic, ginger, and white parts of spring onions for 30 seconds until fragrant.
05 - Add carrots and stir-fry for 2 minutes. Toss in snow peas and cook 1–2 minutes until vegetables are tender-crisp.
06 - Return beef to wok, pour in sauce, and stir-fry for 1–2 minutes until sauce thickens slightly and beef is cooked through.
07 - Sprinkle green parts of spring onions on top. Serve immediately, optionally with steamed rice.