Stir in the oyster sauce and cook for 2–3 minutes. Add about half of the reserved broccoli cooking water and crumble in half of the chicken stock cube. Bring to a simmer and then add the sesame oil.

Marinating - For even better results, marinate chicken in the sauce. Pour 1-2 tablespoon of sauce over the chicken, mix to coat, set aside to marinate for 30 minutes. For garlic, chop it finely ...