Provided is an automatically rotating, high-pressure sterilizer 10. A vessel 110 thereof has a vertical axis 151 that inclines to a horizontal rotation axis 150. A processing chamber 114 in the vessel 110 has a smooth and non-protruding inner surface 114a or has a mechanical stirring element for stirring products 100. The vessel 110 comprises at least: components for supporting and rotating the vessel 140-144, a first connector 120, temperature-controlling components 121-123, processing chamber 114 supplying components 131-134, sensor components 145, 150, and a PLC-type electronic controller 163. Also provided is a corresponding processing method. The present invention achieves high quality while having low operation costs, and is suited for high production volumes.
