Wash the lemon, grate dry and thinly grate the peel. Halve the lemon and squeeze it. Cream fat, sugar, lemon peel and vanilla sugar with the whisk of the hand mixer. Stir in the eggs one after the other. Mix flour, starch and baking powder. Stir in flour mixture and 3 tablespoons of lemon juice.
Pour the dough into a greased lamb baking tin (700 ml capacity) sprinkled with flour. Place upside down on a baking tray and bake in a preheated oven (electric range: 175 °C/ convection oven: 150 °C/ gas: level 2) for approx. 35 minutes. Remove from the oven and let rest for about 10 minutes. Then remove from the tin and let it cool down.
Stir icing sugar with as much lemon juice (1-2 tablespoons of juice) until a thick icing is produced. First, spread a thin layer of the icing on one side of the lamb, leaving out the face and ear. Sprinkle the grated coconut on the icing and let it dry for about 15 minutes lying on its side. Do the same with the other side and let it dry again for about 15 minutes. Paint a face with sugar icing and sugar writing.