Abstract: A heating or cooking method and apparatus is provided. The heating or cooking method or apparatus includes an insulated combustion chamber having an opening at one end and an extension ring extending from the open end. The extension ring may have at least one tab extending from the extension ring, configured to provide an air exhaust space when a piece of cookware is used with the heating apparatus. A fuel receptacle configured to fit inside the combustion chamber has a raised center section with at least one heat channel and a peripheral section with at least one hooded slot. The fuel receptacle may also have a lateral wall separated from the inner enclosure wall of the combustion chamber by a space when the fuel receptacle is situated within the combustion chamber. A grill having essentially the same perimeter shape as the fuel receptacle and a handle is also provided.

Abstract: A heating or cooking method and apparatus is provided. The heating or cooking method or apparatus includes an insulated combustion chamber having an opening at one end and an extension ring extending from the open end. The extension ring may have at least one tab extending from the extension ring, configured to provide an air exhaust space when a piece of cookware is used with the heating apparatus. A fuel receptacle configured to fit inside the combustion chamber has a raised center section with at least one heat channel and a peripheral section with at least one hooded slot. The fuel receptacle may also have a lateral wall separated from the inner enclosure wall of the combustion chamber by a space when the fuel receptacle is situated within the combustion chamber. A grill having essentially the same perimeter shape as the fuel receptacle and a handle is also provided.

Abstract: A new and useful heating device is provided, that is particularly characterized by the efficient way it provides combustion of a carbon based fuel (e.g. wood). A vertically oriented combustion chamber is configured with a relatively narrow, lower portion, a relatively wider upper portion, and a vertically oriented wall structure defining the combustion chamber.