Put yoghurt in a bowl. Wash out 1 empty yoghurt cup, dry well. Add eggs, juice, except for 2 tablespoons, sugar, vanillin sugar and oil to the yoghurt. Mix with the whisk of the hand mixer. Mix flour, baking powder and candied orange peel and stir in portions.
Pour the dough into a greased, flour-spread ring cake tin (2.5 litres capacity) and smooth it down. Bake in a preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for approx. 1 1/2 hours. Cover the cake if necessary after half the baking time. Leave to rest in the pan for 10 minutes, turn out onto a cake rack. Let it cool down. Cut the candied oranges into pieces. Mix icing sugar, egg white and 2 tablespoons lemon juice with the whisks of the hand mixer to a smooth glaze. Cover the cake with it. Decorate with pistachios and candied oranges.
Let it cool down. Cut the candied oranges into pieces. Mix icing sugar, egg white and 2 tablespoons lemon juice with the whisks of the hand mixer to a smooth glaze. Cover the cake with it. Decorate with pistachios and candied oranges. Leave to dry
waiting time approx. 3 hours