Chop the candied lemon peel and candied orange peel very finely, mix with raisins and orange liqueur, cover and let stand for 1 hour. Beat fat, 70 g sugar and lemon peel until frothy. Separate the eggs and gradually stir in the egg yolks.
Beat the egg whites until very stiff, allowing the remaining sugar to trickle in. Mix raisins, candied lemon peel and candied orange peel with flour and starch. Stir 1/3 of the beaten egg white into the fatty egg mixture, then carefully fold in the remaining beaten egg white and add the flour mixture.
Grease a box mould (26 cm long) and sprinkle with breadcrumbs. Fill in the dough and smooth it down. Bake in the preheated oven (electric cooker: 200 °C/ gas: level 3) for about 1 hour. Cover after about 45 minutes.
Leave the cake to cool in the mould for 10 minutes and then turn out onto a cake rack. Mix icing sugar and lemon juice to a smooth glaze. Cover the cake with it. Decorate with fine orange julienne if desired.
Results in about 15 pieces.