Preheat your oven to 350°F (180°C). Line a cake pan with parchment paper.
Separate the eggs. In a bowl, cream together the egg yolks, granulated sugar, and vanilla sugar until pale and fluffy.
Add the all-purpose flour, almond flour, baking powder, and a pinch of salt. Mix until just combined and smooth.
In a separate bowl, whisk the egg whites until stiff peaks form. Gently fold the egg whites into the batter.
Pour the batter into the prepared cake pan and bake for 25-30 minutes, or until a toothpick inserted into the center comes out clean. Let the cake cool completely in the pan.
Whip the heavy cream until stiff peaks form. Gently fold in the punch extract.
Slice the cooled cake into layers. Spread the punch-flavored whipped cream between each layer.
Frost the sides and top of the cake with the remaining whipped cream. Sprinkle with sliced almonds.
Refrigerate the cake for at least 2 hours to allow the flavors to meld.
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