Separate eggs. Beat the egg whites until stiff, adding sugar, vanilla sugar and salt. Beat the egg yolks one after the other. Fold in nuts. Line the bottom of a springform pan (26 cm Ø) with baking paper, fill in the dough and smooth it down.
Bake in the preheated oven (electric: 175 °C/ gas: level 2) for about 20 minutes. Place the pan upside down on a cake rack and let it cool down. Soak gelatine in cold water. Wash the limes and grate the peel.
Mix 450 g yoghurt, 50 g sugar and lime zest. Squeeze 5 sheets of gelatine, dissolve and stir into the yoghurt mixture. Put it in a cold place. In the meantime drain the pears. Remove the sponge cake from the tin and place a cake ring around the base.
Pears, up to a half, on it distribute. Whip 250 g cream until stiff. When the yoghurt mass begins to gel, fold in half of the cream. Spread on the pears and chill the cake.
For the second layer, drain the cranberries and collect the juice. Stir the rest of the yoghurt, sugar (up to one tablespoon) and 5-6 tablespoons of cranberry juice until smooth. Squeeze out the rest of the gelatine, dissolve and stir into the yoghurt mixture.
Cold. When the mixture begins to gel, fold in the cranberries (except for 1 tablespoon) and the rest of the cream. Pour on the yoghurt layer first and smooth it down. Put the cake in a cool place for 2-3 hours.
Whip cream and remaining sugar until stiff. Pour into a piping bag with star-shaped spout. Remove the cake from the cake ring and decorate with cream tuffs. Cut the pear in half and cut into a fan shape. Place the halves in the middle of the cake and top with the remaining cranberries.
Results in about 16 pieces.