Caramel cake with hazelnuts

The process is painstaking, but this cake will justify every second spent on making it.
sweet___history
Recipe by:

sweet___history

Caramel cake with hazelnuts

Ingredients

Gioconda sponge biscuit
almond flour
120g
4.20oz
0.48cup
8tbsp
powdered sugar
100g
3.50oz
0.40cup
6.70tbsp
eggs
3pc
egg whites
3pc
butter
20g
0.70oz
1.34tbsp
powdered sugar
15g
0.53oz
1tbsp
flour
35g
1.23oz
2.35tbsp
Caramel for the mousse
glucose
50g
1.69fl oz
powdered sugar
70g
2.45oz
0.28cup
4.69tbsp
butter
12g
0.42oz
0.80tbsp
cream 33%
120ml
3.96fl oz
0.48cup
8tbsp
Chocolate sponge biscuit
eggs
2pc
sugar
100g
3.50oz
0.40cup
6.70tbsp
flour
60g
2.10oz
4tbsp
bitter chocolate
50g
1.75oz
3.35tbsp
cream
1Tbs
Caramel mousse
egg yolks
60g
2.10oz
4tbsp
sugar
80g
2.80oz
0.32cup
5.36tbsp
water
60g
2.03fl oz
gelatin
15g
0.53oz
1tbsp
cream 33%
250ml
8.25fl oz
1cup
16.75tbsp
caramel sauce
200g
6.76fl oz
hazelnuts
80g
2.80oz
0.32cup
5.36tbsp
cocoa butter
optional
Ganache
cream 15-20%
75ml
2.48fl oz
0.30cup
5tbsp
sugar
20g
0.70oz
1.34tbsp
milk chocolate
100g
3.50oz
0.40cup
6.70tbsp
bitter chocolate
60g
2.10oz
4tbsp
butter
15g
0.53oz
1tbsp
Chantily cream
cream 33%
200ml
6.60fl oz
0.80cup
13.40tbsp
powdered sugar
1Tbs
gelatin
5g
0.18oz
0.34tbsp
water
50ml
1.65fl oz
3.35tbsp
hazelnuts
80g
2.80oz
0.32cup
5.36tbsp

Method

Gioconda sponge biscuit

  • Melt the butter, and let it cool.
  • Sift the almond flour and confectioners sugar into a mixer bowl, add half the eggs and whip for 8 minutes.
  • Add the remaining eggs in 2 parts and whip for 10-12 minutes.
  • Pour half the melted butter into this mixture and beat, then add the remaining butter and whip again.
  • Whisk the whites until light foam, gradually add sugar and whisk until firm peaks.
  • Add a third of the whites mass into the dough. Stir.
  • Add the remaining whites and flour in turn. Sift the flour on top of the dough.
  • Divide the dough into 2 parts and pour into 20 cm molds.
  • Preheat the oven to 170C (340F). Bake for 10-15 minutes.

Chocolate sponge biscuit

  • Whip the egg yolks with sugar.
  • Melt chocolate with milk and stir until smooth.
  • Add liquid chocolate to the yolks, and whip.
  • Add the flour, vanilla extract, and whip again.
  • Whip the whites in a separate bowl until firm peaks. Pour the egg-chocolate mixture into the whites and stir gently with a spatula.
  • Preheat the oven to 180C (355F). Grease the mold with butter and sprinkle with a little flour. Pour the batter. Bake at 180C (355F) for approx. 35 minutes. Cool the baked cake, cut into two layers.

Ganache

  • Boil the cream with sugar.
  • Break the chocolate into pieces, heat the cream and combine a third of the cream with the chocolate.
  • Pour the remaining cream into the chocolate in 2 parts.
  • Add softened butter at 45C (115F). Cool in a water bath, stirring constantly.
  • Put into the fridge for 1 hour.

Caramel sauce for the mousse

  • Melt the glucose, but don't bring it to a boil.
  • Add the powdered sugar and cook until caramel is golden brown.
  • Remove from the stove, add butter and cream and bring to a boil (103C / 220F).
  • Let the caramel cool.

Caramel mousse

  • Combine water with sugar, boil, let cool.
  • Mix egg yolks with the syrup and simmer in a water bath at 40C (105F).
  • Melt the swollen gelatin in a water bath (400C / 750F). Add a small amount of caramel and stir.
  • Add the remaining caramel, stir and cool to 20-22C (65-70F).
  • Whisk the cream.
  • Combine the caramel and the whipped egg yolks. Add the whipped cream at the end.
  • All the ingredients should be at room temperature while combining, otherwise the mousse will curdle.
  • Roast the hazelnuts. Melt the cocoa butter and mix with the nuts. Put the nuts on a plate to cool.
  • The butter shell keeps the nuts from damp in the mousse. Add the nuts to the mousse.

Chantily cream

  • Whip the cold cream with the powdered sugar.
  • Melt the gelatin in the microwave oven. Let cool. Add gelatin to 1/4 of the whipped cream. Mix.
  • Combine with the remaining cream (gelatin is added gradually so that no lumps form in the cream).
  • Add the remaining hazelnuts.

Cake assembling

Follow the next assembling order:

  1. Gioconda sponge;
  2. Ganache;
  3. Caramel mousse;
  4. Chocolate sponge;
  5. Ganache;
  6. Chantily cream;
  7. Gioconda sponge.