Carne de Res con Brócoli Tipo Chino
beef (I used round steak) • broccoli (washed and cleaned) • carrots, thinly sliced • onion, sliced into half-moons • small zucchini • water (240 ml) • cornstarch (Maizena) • Soy sauce • Oyster sauce (optional) • Garlic salt and black pepper • Oil