Not only is this the safest way to clean kettles, but it's also specifically designed to easily remove carbon by a simple heat-and-soak process. The impressive detergency in the Heat 'N Kleen Kettle Cleaner #2095 from Gold Medal emulsifies oil and grease and softens hard carbon deposits in minutes. It's safe on aluminium, stainless steel, iron, chrome and brass. This is an essential addition to your popping process and cleaning supplies.