This is one of the nicest bok choy recipes. It is a vegetable stir fry that combines bok choy and broccoli with seasonings that you often find in Chinese recipes - things like green onions, rice wine vinegar, garlic and ginger. So good.
In a small bowl, stir together the vinegar, soy sauce, seasoning blend, green onions, ginger root and garlic. Set the mixture aside.
In a large skillet, heat the oil over medium heat. Add the broccoli and stir-fry for 4 minutes. Add the vinegar mixture and bok choy. Stir-fry for 3-5 minutes or until the vegetables are crisp-tender.
Sprinkle the stir fry with sesame seeds and serve.