The present invention provides a display board comprising two flexible planar members joined together along an upper edge. The bottom surface of the bonding region is exposed to the outside of the case. Thus a first projection is associated with at least one displaced product and a second projection is associated with the remaining product or products of the product group. Moreover, the method includes determining whether there is at least one patch crack between the first geometry representation and the second geometry representation, and if there is the at least one patch crack, performing a stitching process to the first geometry representation and the second geometry representation. Thus, when prepared using limited volume container, the container of cooked pasta appears full.