After selecting a category of food, the air temperature is monitored and, dependent upon the type of food selected, is able to predict the time at which the cavity temperature will reach a particular threshold to cook the item. The user also has a choice of a well-baked or lightly-baked food item whereby the threshold temperature will increase or decrease accordingly.

European Patent #: 0,169,000
American Patent #: 4,647,746
Australian Patent #: 571,711
Canadian Patent #: 1,236,074
Japanese Patent #: 2,060,698