Steps

• Prepare all ingredients before you start cooking. Slice the beef into thin strips against the grain for tenderness, and chop the broccoli into bite-sized florets. Mince garlic cloves finely, then set everything aside.
• Make the sauce by mixing soy sauce, oyster sauce, sesame oil, cornstarch, sugar, and a bit of water in a bowl. Stir well until the sugar and cornstarch dissolve completely for a smooth sauce consistency.
• Preheat your wok or large skillet over medium-high heat. Add vegetable oil, and when it shimmers, toss in the sliced beef. Stir-fry quickly for about 2–3 minutes until just browned. Remove beef from the wok.
• Add additional oil if needed, then sauté the minced garlic for a few seconds, followed by the broccoli florets. Stir-fry until broccoli is vibrant green and tender-crisp.
• Return the beef to the wok, pour in the prepared sauce, and stir well. Cook for another 1–2 minutes, making sure everything is evenly coated and heated through.