Roughly chop the chocolate and melt over a warm water bath. Melt butter in a pot. Crumble the gingerbread with your hands or in the universal chopper. Grate chocolate on a deep plate
Mix gingerbread crumbs, almonds, rum, rum flavouring, liquid warm butter and chocolate in a bowl. Form 8 balls from the mixture and turn the chocolate in the grater. Press the chocolate down well. Place the finished rum balls in paper baking cups as desired and chill for at least 1 hour or, preferably packed in a tin, leave to stand overnight in the refrigerator.