How to mix oil and water without adding another ingredient

Oil and water don't normally mix, unless you emulsify it with something, like soap, egg yolk, or mustard. But there is a way to mix oil and water without using an emulsifier, and in this video, the Action Lab Man shows how to do it. The secret is to remove the dissolved air from water by using a vacuum chamber. This means you can use degassed water alone to remove grease from clothes.