Cooking plate device having a cooking plate , wherein the cooking plate has: - a cooking plate body having a planar upper side and a lower side , - a short tubular annular portion on the lower side of the cooking plate body , wherein the short tubular annular portion ∘ is disposed on the lower side close to an external periphery of the cooking plate body , ∘ is at least in portions encircling, ∘ projects away from or perpendicularly to the lower side , respectively, in a direction towards the upper side , wherein - the short tubular annular portion on an internal side and/or an external side has at least one depressed latching clearance or at least one projecting latching protrusion, - latching connection means for interacting as a latching connection to the at least one depressed latching clearance or to the at least one projecting latching protrusion of the short tubular annular portion , - the latching connection means being configured separately from the cooking plate body , - the latching connection means are configured for fastening the cooking plate to a hob plate by means of the short tubular annular portion , characterized in that the latching connection means have a fastening ring for the cooking plate for fastening to the hob plate by means of the short tubular annular portion , wherein the fastening ring has: - a continuously encircling annular body , - at least two projecting latching protrusions and/or depressed latching clearances on the annular body for interacting as latching connection to the depressed latching clearances or the projecting latching protrusions of the short tubular annular portion . - a cooking plate body having a planar upper side and a lower side , - a short tubular annular portion on the lower side of the cooking plate body , wherein the short tubular annular portion ∘ is disposed on the lower side close to an external periphery of the cooking plate body , ∘ is at least in portions encircling, ∘ projects away from or perpendicularly to the lower side , respectively, in a direction towards the upper side , wherein ∘ is disposed on the lower side close to an external periphery of the cooking plate body , ∘ is at least in portions encircling, ∘ projects away from or perpendicularly to the lower side , respectively, in a direction towards the upper side , - the short tubular annular portion on an internal side and/or an external side has at least one depressed latching clearance or at least one projecting latching protrusion, - latching connection means for interacting as a latching connection to the at least one depressed latching clearance or to the at least one projecting latching protrusion of the short tubular annular portion , - the latching connection means being configured separately from the cooking plate body , - the latching connection means are configured for fastening the cooking plate to a hob plate by means of the short tubular annular portion , characterized in that the latching connection means have a fastening ring for the cooking plate for fastening to the hob plate by means of the short tubular annular portion , wherein the fastening ring has: - a continuously encircling annular body , - at least two projecting latching protrusions and/or depressed latching clearances on the annular body for interacting as latching connection to the depressed latching clearances or the projecting latching protrusions of the short tubular annular portion . <EOS>