These coatings let various products slide out of their packaging, be it mayonnaise, or glue. The innovation is a coating developed in the Massachusetts Institute of Technology (MIT) that sits between the product and the packaging and which works to create a slippery surface that enables the sauce to slide from the bottle. It is a system of “liquid-impregnated surfaces” where coatings cling to surfaces - such as glass or plastic - and allow the liquid to slide out seamlessly. The coatings are each made up of different materials which work with the liquid in the container - such as a mayonnaise - to allow it to slide out.