Patented technology: World patented technology automatically drains, filters and stores cooking oil for future use. Perfect results: Enjoy crispy, professionally-fried results with Tefal’s immersed heating system. Easy to use: Stay in control with the adjustable thermostat. Alleviate bad smells: ‘Cool Zone’ area under the heating element limits bad smells and prevents crumbs from burning *Except for the heating element and lid. Dishwasher safe: Cleaning couldn’t be easier thanks to the Oleoclean Compact’s dishwasher safe parts*.