A method and apparatus for stewing and simmering food in a microwave oven wherein the control causes energization of the microwave generator for a preselected period of time at a preselected low power level correlated with other power levels in the overall heating of the food, including a start-heating,...http://www.google.fr/patents/US4791263?utm_source=gb-gplus-shareBrevet US4791263 - Microwave simmering method and apparatus
