The invention provides methods and moulding devices for moulding three-dimensional productions from a mass of foodstuff which is suitable for human consumption, in particular from a mass of meat, in particular chicken. The filter may be arranged so that liquid that interacts with the beverage medium flows through the filter to exit the interior space. The system also includes multiple output ports each having a memory structure and one or more output queue pointers. The estimated background color is used to normalize each pixel’s color such that in the final image, artifacts arising from camera gain and uneven lighting of the board surface are eliminated.