In the video, a person is seen adding cornstarch to a bowl of ingredients. The bowl already contains a brown liquid and a white powdery substance. The person uses a measuring cup to pour the cornstarch into the bowl and then uses a whisk to mix the ingredients together. The person's hands are visible, but their face is not shown in the video. The background is a kitchen counter with various other ingredients and utensils visible. The person's actions are deliberate and careful as they ensure that the cornstarch is evenly distributed throughout the mixture.