an electrically heated water kettle comprises a vessel for holding a liquid for extraction of tea , coffee or other food material . the vessel includes a partially open immersible container sized to allow the passage of water between the walls of the vessel . the container is capable of holding the material while an opening in the container allows the entrance of water into the container upon immersion of the container in the water . the heated kettle incorporates structure to hold the container out of the water until the water reaches an appropriate extraction temperature and to immerse or withdraw the container into or from the water as is necessary to accomplish the extraction .