Abstract: A coffee roaster oven chamber wherein coffee beans are heated and intermixed in a fluidized bed is fabricated as a unitary structure from a transparent material that allows incandescent coils to radiantly heat coffee beans while they are concurrently heated by air heated by the same coils. In a preferred embodiment the oven chamber is fabricated from glass as a single piece structure which may be removed from the coffee roaster for adding or removing coffee beans and cleaning.