This simple dish of fresh bok choy and fried tofu stir-fried in a thick, flavorful sauce is perhaps one of the most popular Asian vegetable dishes. The deeply flavorful sauce is made from soy sauce, vegetable broth, a dash of sugar for sweetness, and cornstarch to make it thick.

Source: Healthier Restaurant-Style Chinese Bok Choy and Tofu [Vegan]