Abstract: In order to boil eggs or other foods not suitable for cooking with direct microwave radiation, a receptacle containing such foods is separated from a microwave source by a radiation shield overlain by a heating vessel partly filled with water which is exposed to the microwaves. This vaporizes the water and the resulting steam is admitted through one or more tubes into the receptacle for a rapid heating of its contents. The shield may reflect the incident microwaves into the water bath.

Abstract: In order to boil eggs or other foods not suitable for cooking with direct microwave radiation, a receptacle containing such foods is separated from a microwave source by a radiation shield while an adjacent heating vessel partly filled with water is exposed to the microwaves. This vaporizes the water and the resulting steam is admitted into the receptacle for a rapid heating of its contents. The shield may adjoin the vessel walls and may reflect the incident microwaves into the water bath. In a simple case, the food receptacle and its shield may be replaced by a metal foil--e.g. of aluminum--in which the foods to be boiled are loosely wrapped while lying in a shallow pool of water within the microwave-irradiated heating vessel.