If you have a fellow kettle that is dirty, there are a few things you can do to clean it. First, use a damp cloth to wipe down the exterior of the kettle. Next, pour some boiling water into the kettle and turn it up to full blast. Let the water heat up for about 30 seconds before using a scrub brush to clean the interior of the kettle. Finally, pour cold water into the kettle and turn off the heat. Use a towel to dry it off. ..