In this lesson, we continue discussing how to properly prepare vegetable soup, focusing on the cooking method. The speaker emphasizes the importance of proper ingredient preparation and cooking techniques, showcasing the steps in a video. Key vegetables like carrots, potatoes, onions, and cauliflower are highlighted, and the lesson covers how to sauté them in oil, ensuring to monitor the temperature for optimal flavor and texture. The preparation aims to provide students with a clear understanding of the cooking process and techniques involved in making vegetable soup.