Prepare the Broccoli: Wash the broccoli and cut off the individual florets from the stem. Trim off the hard outer parts of the stem and cut into slices.
Marinate the Chicken: Marinate the chicken slices with cornstarch, water, salt, oyster sauce, and white pepper.
Prepare Aromatics and Vegetables: Peel and mince garlic. Cut ginger, green onions, and carrots into slices.
Make the Stir Fry Sauce: Combine oyster sauce, light soy sauce, salt, sugar, cooking wine, and white pepper to create the sauce.
Blanch the Broccoli: Add salt and oil to a wok of boiling water, then add the broccoli. After 45 seconds, remove the broccoli and shock it in ice-cold water.
Stir Fry the Chicken: Heat oil in a hot wok, then add the chicken. Remove the chicken once cooked.
Stir Fry Aromatics and Vegetables: Add the aromatics to the wok, stir frying until fragrant. Then add the broccoli and a splash of cooking wine.
Combine and Finish: Return the chicken to the wok, add the prepared sauce, and pour in a slurry of cornstarch and water to thicken the sauce. Finish with a bit of sesame oil, then plate and serve.