The present invention relates to a cooking vessel (30) arrangeable or arranged inside an oven cavity (12) of a cooking oven (10). The cooking vessel (30) is provided for receiving food stuff (40) being prepared by a steam cooking process. The cooking vessel (30) is confined or confinable, so that a higher humidity inside said cooking vessel (30) as outside said cooking vessel (30) is allowed. The cooking vessel (30) is confined or confinable in such a way, that an overpressure inside said cooking vessel (30) is limited. The cooking vessel (30) comprises at least one vessel sensor (32) arranged inside said cooking vessel (30) and connectable or connected to a control unit (26) of the cooking oven (10). The vessel sensor (32) includes at least one humidity sensor and/or temperature sensor. Further, the present invention relates to a cooking oven (10) comprising at least one cooking vessel (30) arrangeable or arranged inside an oven cavity (12) of said cooking oven (10). Moreover, the present invention relates to a method for performing a steam cooking process.
