A vegetable stir-fry is only as good as its sauce, so it is important to prepare one with the right balance of ingredients. This vegetable stir-fry includes oyster sauce, rice wine, sugar, and chicken broth, and is thickened by a cornstarch slurry. The sauce works well with almost any fresh vegetables, such as broccoli, bok choy, bell peppers, and baby corn. If you like, to enhance the appearance of the finished dish, you can top the stir-fried vegetables with toasted sesame seeds.