In the video, a person is seen adding butter to a pan of sauce. The person uses a spoon to scoop out the butter from a container and then adds it to the sauce. After adding the butter, the person uses a spatula to mix the butter into the sauce. The sauce appears to be a tomato-based sauce, and the butter is added to enhance its flavor. The person's actions are deliberate and careful, ensuring that the butter is evenly distributed throughout the sauce. The video provides a close-up view of the pan, allowing the viewer to see the texture and consistency of the sauce and the way the butter melts into it. The lighting in the video is bright, making it easy to see the details of the sauce and the butter. Overall, the video provides a clear and detailed visual of the process of adding butter to a sauce.