Chop the chocolate for the dough. Beat the fat, sugar, vanillin sugar and lemon zest until foamy. Stir in the eggs bit by bit. Mix flour and baking powder and stir in. Peel and quarter 3 pears, remove the core.
Dice the pears and fold into the dough with the chocolate. Pour into the greased springform pan (26 cm Ø) and bake in the preheated oven (electric: 200 °C/ gas: level 3) for 70-80 minutes.
Cover with parchment paper after 3/4 of the baking time. Melt the couverture, spread on the cooled cake. Let it set. Warm up the nougat, stir in the cream and whip everything until creamy. Pour the nougat mixture as tuffs onto the cake.
Wash the fourth pear, cut it in half, remove the seeds and cut it into 12 slices and place it on the cake. Sprinkle with almonds and pistachios. Makes about 12 pieces.