US Patent 7638736 Method and device for cooking with steam

A method for steam cooking includes introducing steam, from a steam generator device, into a food cooking container through a supply conduit so that at an inlet opening to the food cooking container the steam enters tangentially to a wall of the food cooking container. The generation of steam is controlled by a control system so as to provide a difference between the pressure in the supply conduit and the pressure in the interior of the food cooking container of at least 1 kPa.