12 sheets filo pastry (if frozen, thaw), approximately 9 ounces/ 250 g
4 1/2 ounces/ 125 g butter, melted
1 teaspoon ground cinnamon
3 1/2 ounces/ 100 g Demerara sugar (natural brown sugar or turbinado)
4 ginger nuts
14 ounces/ 400 g leftover Christmas pudding
3 apples or pears, or 2 quince, or a mixture of the three
50 g good-quality chocolate (70-percent cocoa solids), roughly chopped
Icing sugar (confectioners' sugar), for dusting
Ready-made custard, to serve