In the video, a person is cooking mushrooms in a pan. They add flour to the pan and stir it with a spatula. The mushrooms are sizzling in the pan, and the flour is being mixed in with them. The person is continuously stirring the mixture to ensure even cooking. The mushrooms are golden brown, and the flour is white. The pan is black and appears to be on a stovetop. The person's hand is visible as they stir the mixture.