NOVELTY - The organic waste composter comprises a vertically orientated, processing vessel (14) having a first heating unit, a stirring mechanism, a unit for injection of air for composting waste, a waste inlet hatch (18), a waste input receptacle, a rotating auger, and a second heating unit located proximal to a second end of the vessel. The rotating auger is arranged to receive waste from the waste input receptacle, to cut the waste and to transport the waste to a first end of the processing vessel, and is operatively connected to a control unit (53).    USE - Organic waste composter.    ADVANTAGE - The automatic composter allows efficient and rapid decomposition of the organic waste without clogging of waste in the vessel and emission of annoying odors from the vessel and with less power consumption, and ensures drying and sanitation of the waste using agitators, catalyst device and heating device.    DETAILED DESCRIPTION - The organic waste composter comprises a vertically orientated, processing vessel (14) having a first heating unit, a stirring mechanism, a unit for injection of air for composting waste, a waste inlet hatch (18), a waste input receptacle, a rotating auger, and a second heating unit located proximal to a second end of the vessel. The rotating auger is arranged to receive waste from the waste input receptacle, to cut the waste and to transport the waste to a first end of the processing vessel, and is operatively connected to a control unit (53). The control unit is arranged to activate the rotating auger periodically during a rotation period that extends 15 seconds and is shorter than 10 minutes every 60 minutes, and is operatively connected to a waste balance and to an input unit for receiving data relating to weight and type of waste of the waste that is received in the waste input receptacle. The second heating unit is located proximal to a top end of the vessel. The stirring mechanism comprises a powered central rotatable vertical shaft extending vertically along the vessel with vertically spaced agitators, and a bottom agitator fixedly attached to the rotatable vertical shaft. The agitator includes an inlet connected to the injection unit and nozzles for outputting air at a bottom section of the vessel. The nozzles are arranged at different radiuses from the rotatable vertical shaft. The rotatable vertical shaft has a circular cross section, and is provided with an internal passage for air between the injection unit and the bottom agitator. An air handling unit is provided for extracting air from the vessel. A heating device is provided for receiving air from the air handling unit and for heating the air. A catalyst device is provided for removing odor compounds present in the heated air. A heat exchanger is provided for transferring heat from air output from the catalyst device to air extracted from the vessel. A heating collar is connected to the heat exchanger for receiving heated air. A filter is provided between the air handling unit and the heat exchanger. The bottom agitator has a symmetrical cross section, and is rotatable in both directions. An INDEPENDENT CLAIM is included for a method for composting organic waste material.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic elevational view of a composter.    Vessel (14)    Waste inlet hatch (18)    First gear (30)    Output arm (40)    Control unit. (53)