Abstract: A cutting device is disclosed for use to derind a half-section of a citrus fruit. The device has an upwardly opened container with a vertical axis. An upwardly opened cup is coaxially mounted in a removable manner within the container at a short distance from the upper edge thereof, in order to receive and hold he half-section to be derinded. A manually operable knife-supporting element is removably mounted in a rotatable manner coaxially on top of the container. This element has an annular bottom edge shaped and sized to fit and be slidable onto the upper edge of the container. It also has a knife-receiving sleeve that extends at a radial distance from said vertical axis and projects downwardly towards the central bottom portion of the cup. A knife is removably insertable into the sleeve after the half-section has been positioned on top of the container.