Cooking plate device having a cooking plate (22, 122, 222), wherein the cooking plate (22, 122, 222) has: - a cooking plate body (23, 123, 223) having a planar upper side (25, 125, 225) and a lower side (26, 126, 226), - a short tubular annular portion (28, 128, 228) on the lower side (26, 126, 226) of the cooking plate body (23, 123, 223), wherein the short tubular annular portion ∘ is disposed on the lower side (26, 126, 226) close to an external periphery (29, 129, 229) of the cooking plate body (23, 123, 223), ∘ is at least in portions encircling, ∘ projects away from or perpendicularly to the lower side (26, 126, 226), respectively, in a direction towards the upper side (25, 125, 225), wherein - the short tubular annular portion (28, 128, 228) on an internal side and/or an external side (30, 130, 230) has at least one depressed latching clearance (32, 132, 232) or at least one projecting latching protrusion, - latching connection means for interacting as a latching connection to the at least one depressed latching clearance (32, 132, 232) or to the at least one projecting latching protrusion of the short tubular annular portion (28, 128, 228), - the latching connection means being configured separately from the cooking plate body (23, 123, 223), - the latching connection means are configured for fastening the cooking plate (22, 122, 222) to a hob plate by means of the short tubular annular portion (28, 128, 228), characterized in that the latching connection means have a fastening ring for the cooking plate (22, 122, 222) for fastening to the hob plate by means of the short tubular annular portion (28, 128, 228), 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 (32, 132, 232) or the projecting latching protrusions of the short tubular annular portion (28, 128, 228). - a cooking plate body (23, 123, 223) having a planar upper side (25, 125, 225) and a lower side (26, 126, 226), - a short tubular annular portion (28, 128, 228) on the lower side (26, 126, 226) of the cooking plate body (23, 123, 223), wherein the short tubular annular portion ∘ is disposed on the lower side (26, 126, 226) close to an external periphery (29, 129, 229) of the cooking plate body (23, 123, 223), ∘ is at least in portions encircling, ∘ projects away from or perpendicularly to the lower side (26, 126, 226), respectively, in a direction towards the upper side (25, 125, 225), wherein ∘ is disposed on the lower side (26, 126, 226) close to an external periphery (29, 129, 229) of the cooking plate body (23, 123, 223), ∘ is at least in portions encircling, ∘ projects away from or perpendicularly to the lower side (26, 126, 226), respectively, in a direction towards the upper side (25, 125, 225), - the short tubular annular portion (28, 128, 228) on an internal side and/or an external side (30, 130, 230) has at least one depressed latching clearance (32, 132, 232) or at least one projecting latching protrusion, - latching connection means for interacting as a latching connection to the at least one depressed latching clearance (32, 132, 232) or to the at least one projecting latching protrusion of the short tubular annular portion (28, 128, 228), - the latching connection means being configured separately from the cooking plate body (23, 123, 223), - the latching connection means are configured for fastening the cooking plate (22, 122, 222) to a hob plate by means of the short tubular annular portion (28, 128, 228), characterized in that the latching connection means have a fastening ring for the cooking plate (22, 122, 222) for fastening to the hob plate by means of the short tubular annular portion (28, 128, 228), 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 (32, 132, 232) or the projecting latching protrusions of the short tubular annular portion (28, 128, 228).