11 Preset Programmes Optimal results, every time Several models come with (auto)menus featuring preset recipes to make the preparation of certain dishes even easier. You select on the oven the type of food you want to prepare and enter its weight, and the oven automatically chooses the ideal programme and time for optimal results. Defrost function A microwave oven defrosts by using bursts of low heat. In between the burst of heat, the warm portions of the food transfers heat to the colder parts, allowing more even thawing. Special Speed Defrost preset evenly and quickly defrosts any deep-frozen item. Always cook defrosted food immediately.