In the video, a person is cooking a dish that involves onions and celery. The person is adding the vegetables to a pot of liquid and stirring them with a spoon. The vegetables are being cooked in the pot, and the person is continuously stirring them to ensure even cooking. The pot appears to be on a stove, and the liquid in the pot is bubbling, indicating that it is being cooked at a high temperature. The person's movements are deliberate and careful, ensuring that the vegetables do not stick to the bottom of the pot. The sound of the spoon stirring the vegetables can be heard, and the steam rising from the pot suggests that the dish is being cooked at a high temperature.