Ensure that you have a clean white chopping board available. Remove feta cheese block from brine and allow to drain. Using a medium knife trim one edge to ensure is straight and clean. Cut through from first cut at 10mm thick intervals. Place slices of feta chees together and cut from one edge at 10mm intervals. Place all strips of feta together and cut across at 10mm intervals to produce dice. Place in a garnish container with a lid. Store in refrigerator until required.