Boiling hot water in a few minutes with the double-walled Petromax Fire Kettle! While branches, barks and pine cones burn and crackle in the fire bowl, the heat of the fire goes up through the inside of the kettle and brings the water inside the wall of the Fire Kettle to the boil. As soon as the water boils, the steam whistle starts whistling. Thanks to the three feet, the Fire Kettle leaves no traces of the fire behind and is steady whatever the surface. Pushing the fire bowl upside down in the kettle makes the Fire Kettle particularly space-saving and easy to transport.