Cooking device for heating food, having 1.1. a cooking chamber for receiving the food to be heated, having a cooking chamber opening for loading and unloading the cooking chamber with food, 1.2. a cooking chamber door, which can be moved between an open position in which the cooking chamber opening is released and a closed position in which the cooking chamber opening is closed, 1.3. a locking device for reversibly locking the cooking chamber door in the closed position, having 1.3.1. a locking engagement, and 1.3.2. a locking latch mounted movably relative to the cooking chamber door and to the cooking chamber, which latch can be moved between a release position in which the cooking chamber door can be moved from the closed position into the open position and a locking position in which the locking latch engages in the locking engagement and blocks a movement of the cooking chamber door from the closed position into the open position, and 1.3.3. a latch exit opening, 1.4. wherein the locking device is designed in such a way that a movement component of a displacement movement of the locking latch is orientated parallel to the direction of a movement of the locking engagement relative to the locking latch when the cooking chamber door is moved from the closed position, 1.5. wherein the locking device is designed in such a way that the locking latch penetrates the latch exit opening in the locking position and is retracted further behind the latch exit opening in the release position compared to the locking position, characterised in that the locking device is designed in such a way that the locking latch is displaced purely translationally or is displaced translationally and rotationally when it is retracted through the latch exit opening into the release position, in that in the locking position, the ratio of the cross-sectional area of the latch exit opening and an area surrounded by the smallest convex envelope of an intersection surface of the locking latch with the latch exit opening is at most 2:1. 1.1. a cooking chamber for receiving the food to be heated, having a cooking chamber opening for loading and unloading the cooking chamber with food, 1.2. a cooking chamber door, which can be moved between an open position in which the cooking chamber opening is released and a closed position in which the cooking chamber opening is closed, 1.3. a locking device for reversibly locking the cooking chamber door in the closed position, having 1.3.1. a locking engagement, and 1.3.2. a locking latch mounted movably relative to the cooking chamber door and to the cooking chamber, which latch can be moved between a release position in which the cooking chamber door can be moved from the closed position into the open position and a locking position in which the locking latch engages in the locking engagement and blocks a movement of the cooking chamber door from the closed position into the open position, and 1.3.3. a latch exit opening, 1.3.1. a locking engagement, and 1.3.2. a locking latch mounted movably relative to the cooking chamber door and to the cooking chamber, which latch can be moved between a release position in which the cooking chamber door can be moved from the closed position into the open position and a locking position in which the locking latch engages in the locking engagement and blocks a movement of the cooking chamber door from the closed position into the open position, and 1.3.3. a latch exit opening, 1.4. wherein the locking device is designed in such a way that a movement component of a displacement movement of the locking latch is orientated parallel to the direction of a movement of the locking engagement relative to the locking latch when the cooking chamber door is moved from the closed position, 1.5. wherein the locking device is designed in such a way that the locking latch penetrates the latch exit opening in the locking position and is retracted further behind the latch exit opening in the release position compared to the locking position, characterised