In an electric mixer fitted with the whisk attachment, whip the icing sugar, ground almonds, eggs, egg yolks and pistachio paste until pale. In another mixer, beat the egg whites and granulated sugar until stiff, fold into the first mixture along with sifted potato starch and melted butter. Roll out the biscuit on a 60 x 40 x 2 cm Flexipat® baking sheet. Bake for about 15 mn in a convection oven at 180°C.
Mix together sugar and pectin NH while dry. Heat inverted sugar, broken raspberries, raspberry purée and lemon juice to 40°C, then sprinkle the sugar-pectin mixture in. Bring to a rolling boil, and then add the gelatine*. Blend and let cool. Set aside for the assembly.
*12 g of 200 bloom gelatine and 72 g water
Spread out the raspberry confit to cover the entire sheet of pistachio biscuit. Cut the sheet lengthwise into 3 equal pieces and stack the strips. Freeze. Cut 14 x 5.5 cm cakes, decorate the cakes with chocolate garnish, fresh raspberries and silver leaves.