What Is Ceradeux Granite Coating? Ceradeux Granite Coating Is A Healthy Alternative To Ptfe Nonstick Coating. It Is Environment & The Human Body Friendly , As Its Main Ingredients Come From Mother Nature-Dirt, Sand & Rocks. Cast Aluminum Body & Lid Are Highly Heat Conductive & Together Create A Convection Effect For More Efficient Cooking. Highly Scratch-Resistant & Durable Steam Vent Hidden Under Lid Knob Prevents Overflow & Steam Burns The Body Of The Cooking Pot Is Monolithic, And The Manufacturing Process Ensures That The Pot Will Conduct Heat Evenly For Fast And Efficient Cooking.