The main ingredient in Chinese stir-fry is typically a protein source, which can include chicken, beef, pork, shrimp, or tofu. This protein is often cut into small, bite-sized pieces for quick cooking and is combined with various vegetables such as bell peppers, broccoli, and carrots. The cooking method involves high heat and quick cooking in a wok or pan, often with the addition of flavorful sauces, such as soy sauce or oyster sauce, to enhance the dish. Stir-fry is not only a fast and healthy option but also allows for endless variation and customization.