In the video, a person is seen adding sliced onions to a pot of soup. The soup appears to be a tomato-based soup, with a rich red color and a thick consistency. The person then stirs the soup with a wooden spoon, mixing the onions into the soup. The onions are sliced thinly and are white in color, contrasting with the red soup. The person stirs the soup several times, ensuring that the onions are evenly distributed throughout the pot. The pot is placed on a stove, and there is a green towel visible in the background. The video ends with the person continuing to stir the soup.