This is a teapot, not a tea kettle -- it is not suitable for any heat source.
The Manto is the modern version of the traditional Cosy® teapot. It looks different but has the same practical features! Its removable, felt-clad outer casing of stainless steel covers the ceramic inner pot to ensure that the temperature and flavor of the tea are retained for a longer period of time. The Manto is supplied with a tea filter, and its inner pot is dishwasher safe, which makes it very practical in use.