The invention relates to a cooking lid (1) for preventing liquids from boiling over, having at least one passage opening (4) to which a movable closure part (3) of a closure element (2) is assigned. In order to make available a cooking lid (1) that guarantees not only a controlled cooking process but also sufficient escape of steam, and also offers a possibility of adding ingredients or liquids during the cooking process, the invention provides that the closure part (3) is disposed so as to rotate.