Significantly improved cooking of food is achieved in machines which tumble the food in a rotating heated vessel. In one embodiment a food-containing vessel rotates past an electric heater which supplies heat to the vessel. The vessel has a cap provided with an axial vent through which a temperature...http://www.google.fr/patents/US4120981?utm_source=gb-gplus-shareBrevet US4120981 - Method of cooking food
