In the video, a person is cooking a sauce in a pot on a stove. The sauce is bubbling and boiling, indicating that it is being cooked at a high temperature. The person uses a wooden spoon to stir the sauce, ensuring that it cooks evenly. After some time, the person adds a white substance to the sauce, which could be cream or milk, to thicken it. The person then uses a strainer to separate the sauce from the white substance, which is likely to remove any lumps or impurities. The sauce appears to be a rich, brown color, suggesting that it may contain ingredients such as tomatoes, onions, and garlic. The person's actions are deliberate and careful, indicating that they are experienced in cooking. Overall, the video provides a glimpse into the process of cooking a sauce, highlighting the importance of stirring and straining to achieve the desired consistency and flavor.