D-2 - Hazelnut dacquoise + Vanilla crémeux
D-1 - Dark chocolate mousse + Assembly
Day of serving - Flocking + Decoration
Hazelnut dacquoise
Preheat the oven to 170°C
Roast the ground hazelnut by sautéing it for a few minutes in a pan over medium heat until it turns a light brown, be careful not to burn
In a bowl, mix 45g of roasted ground hazelnut and 50g of icing sugar with 15g of flour
In the mixing bowl of your food processor, add 65g of egg white and 25g of sugar
Whip the meringue until you get soft peaks, it should not be too stiff
Add the meringue to the dry ingredients and mix gently
Place the batter in a piping bag and put to one side
Pipe the batter into a rectangle of 30cm x 12cm on a baking mat which has been placed on top of a perforated baking tray
You can spread the dacquoise with a spatula if you do not have a pastry bag
Bake for 15 minutes at 170°C
Let it cool, unwrap and leave in fridge
Vanilla cream
Line the square stainless steel insert with clingfilm to make it waterproof
Boil the milk and the cream in a saucepan with the slit and scraped vanilla pod, let it cool then filter to remove the pod
Mix 30g of sugar and 1g of pectin and pour them over the milk and cream and vanilla mixture, whisking lightly
Pour everything into a saucepan and bring to a boil
Leave to cool and pour into the clingfilmed square stainless steel insert
Leave in the freezer for at least 6 hours
Dark chocolate mousse
Place the gelatine sheets in cold water or mix 3g of powdered gelatine with 15g of water and set aside for at least 10 minutes
Melt 140g of dark chocolate in a bain-marie
In a saucepan, heat the milk then add the squeezed gelatine sheets or 18g of the gelatine and water mixture
Pour the milk in three batches over the chocolate, mixing with a spatula
Let the ganache cool
Whip 230g of whipped cream into a soft whipped cream that is not too stiff
Add the whipped cream to the cooled ganache and mix with the spatula until a smooth and shiny mixture is obtained
Assembly
Line the square stainless steel mould with clingfilm to make it waterproof
Cover the bottom with half of the chocolate mousse
Gently add the vanilla crémeux insert
If necessary, use a blowtorch to get it out of the stainless steel insert
Pour in the rest of the chocolate mousse
Add the dacquoise and gently press so the mousse reaches the edges of the biscuit
Smooth with a spatula, clingfilm and set aside in the freezer for at least 12 hours
On the day of serving, take the log out of the freezer 6 hours before serving it
For decoration, you can use a spray can of chocolate-coloured velvet glaze and spray flocking on the log on taking it out of the freezer then leave in fridge for 6 hours to gently defrost the log
Bring to room temperature 15 minutes before serving