The non-reactive, complete ceramic kettle is safe for use directly on gas. The attractive matte glaze won't react with water or give off a metallic taste that can affect the flavor of the tea itself.
Due to the structure of clayware, there are many tiny holes on the surface of ceramic kettle. When heated with boiling water, vapor come through the pores so that you find it 'leak', this is quite normal. To avoid this, for the first time using this item, please cook congee(rice gruel) paste in the kettle. This will block the pores permanently and bring the kettle to a excellent condition.