The main ingredient in a traditional Chinese stir-fry is typically a variety of vegetables, often combined with a protein source such as chicken, beef, pork, or tofu. Common vegetables used include bell peppers, broccoli, carrots, and snap peas. The key to a successful stir-fry is the cooking technique, which involves quickly frying the ingredients in a small amount of hot oil over high heat. This method retains the color, texture, and flavor of the vegetables while ensuring that the protein cooks evenly. Seasonings like soy sauce, garlic, and ginger are also integral to the dish, enhancing its overall flavor profile.