Lemon cake in glaze

lemon cakeIngredients for 16 portions;
1 a cube of butter or margarine (25 day), 1 a glass of sugar (ok. 25 day), 10 heaped tablespoons of flour, 5 heaped tablespoons of potato flour,
20 a dag of chocolate cake topping (or 2 milk chocolate bars), 1 i 1/2 plates (15 day) dark chocolate, 4 eggs,
2 lemons, 1 a teaspoon of baking powder, pinch of salt, fat and bread crumbs to form, slices of candied lemon for decoration

The way of preparation:
1. Beat fat with sugar (3 put the spoons aside) for a fluffy mass. While grinding, gradually hammer in the stutters. Peel half a lemon thinly (before that, the fruit should be scalded with boiling water), cut the peel into thin strips. Rub the rest of the peel of both lemons on a fine grater.
2. Mix the flour with the potato flour, baking powder, salt and grated lemon zest. Mix thoroughly with the grated mass, add finely chopped dark chocolate.
3. Grease and sprinkle with breadcrumbs a rectangular form (about the length 25 cm), fill with dough, level the surface. Put into the preheated oven, bake 65-75 minutes at 175 ° C.
4. Remove the baked cake from the mold, puncture the top in several places with a toothpick. Squeeze the lemon juice, mash with the rest of the sugar for as long, until the sugar dissolves. Brush the dough, set aside overnight, let it soak well.
5. Chop the icing for the cakes (or chocolate), put in a bowl. Place the bowl in hot water, dissolve the glaze.
6. Brush the cake with icing on all sides, Garnish with strips of lemon zest and slices of candied lemon. Serve with whipped cream.