Abstract: A roasting oven includes an enclosure coupled to a source of microwave RF energy, an operable door for sealing the enclosure for RF, the operable door having a viewing aperture which prevents the escape of RF from inside the chamber. A rotating support has an axis which is perpendicular to the viewing aperture such that the progress of roasting may be viewed through the viewing aperture and into a food container placed in the rotating support. The applied power of the microwave RF source and the rotational velocity of the rotating support are selected to provide uniform or wide spectrum roasting of the food item. A roasting profile may include a roasting interval during which the microwave RF source and rotating support are both energized, and subsequently a cool-down interval where the microwave RF source is disabled and the rotating support continues to rotate.

Abstract: A microwavable package for roasting coffee beans in which the package is shaped to be relatively larger in two dimensions than in a third dimension so that it presents a generally flat appearance or configuration. The package comprises a paper outer layer and an inner layer that includes a microwave susceptor. On the interior of the package a filter is provided, and a vent permits communication between the interior and exterior. The outer layer may be variously, kraft paper, bond paper, or filter paper. The inner layer may comprise a printed dipole antenna or a thin film conductor. The vent may be at least one perforation through both the inner and outer layers or a series of perforations. In a preferred embodiment, the package includes supports for maintaining the package in a generally vertical orientation when it is placed in a microwave to roast the coffee beans contained therein.