Chocolate Joconde (Biscuit Joconde au Chocolat)70g almond powder70g powdered sugar70g egg yolks30g egg whites55g cake flour20g cocoa powder 25g unsalted butter, meltedFrench Meringue:130g egg whites45g sugarPistachio Joconde (Biscuit aux Pistaches)90g almond paste 50%38g pistachio paste45g whole egg40g egg yolks25g egg whites45g cornstarch20g unsalted butter, meltedFrench Meringue:80g egg whites50g sugarRaspberry Jam (Framboise pepins)35g sugar20g glucose8g water100g fresh or frozen raspberries4g pectin mixed with 23g sugar6g lemon juice 30°B Sugar Syrup 20g sugar 15g waterSirop d'imbibage20g 30°B Sugar Syrup15g water15g eau-de-vie de framboiseDark Chocolate Mousse (Mousse au Chocolat Noir)Make this before you are ready to assemble the cake440g heavy cream, whipped to soft peak. Refrigerate until readyPate a bombe: 60g whipping cream 50g sugar 100g egg yolks200g 66% dark chocolate, melted and let cool Pistachio Mousse (Mousse a la pistache)130g heavy whipping cream, whip until soft peak and refrigerate until ready20g pistachio paste70g milk1/10 vanilla bean seeds40g egg yolks15g sugar2g gelatin leaf, softened in a cold waterChocolate Glaze (Glaçage au Chocolat)Make this the last after the cake is completely frozen and you are ready to glaze.150g water250g sugar100g cocoa powder150g heavy cream15g gelatin leaves, soften in cold water
Chocolate Joconde (Biscuit Joconde au Chocolat)
Sift together the cake flour and the cocoa powder. Set aside.
Combine the almond powder, powdered sugar, egg yolks, and 30g egg whites together and whisk until thick and pale
On a separate clean bowl, whisk the egg whites until foamy and add the sugar a little at a time until it form firm peak
Fold some of the meringue into the yolk mixture to lighten it.
Add in the sifted flour mixture, and fold well.
Fold in the melted butter
Fold in the rest of the meringue
Spread the batter into half-sheet pan (you might end up with less volume if you overmix the batter and might want to use 9x13" pan)
Bake in the oven at 230C for 5-6 minutes
Pistachio Joconde (Biscuit aux Pistaches)
Mix the almond paste and the pistachio paste together in a mixer bowl
Add the whole egg, egg yolks, and egg whites and beat until thick and pale
Make french meringue in a separate bowl (see the chocolate joconde instruction)
Mix some meringue into the batter, fold well
Add the sifted cornstarch, fold well
Add the melted batter
Lastly, fold in the rest of the meringue
Spread the batter into half-sheet pan (you might end up with less volume if you overmix the batter and might want to use 9x13" pan)
Bake in the oven at 230C for 5-6 minutes
Raspberry Jam (Framboise pepins)
Bring the sugar, glucose, and water to a boil in a saucepan
Mix the raspberries in and continue to boil
Mix in the pectin-sugar and boil until raspberry has broken down and soft
Cool in an icebath and add the lemon juice
Refrigerate until needed
The recipe called for 50g of this jam
30°B Sugar Syrup
Boil together and let cool
Sirop d'imbibage
Mix all the ingredients together
Dark Chocolate Mousse (Mousse au Chocolat Noir)Make this before you are ready to assemble the cake)
Make pate a bombe by boiling the 60g of heavy cream and sugar in a saucepan
Meanwhile, whisk the egg yolks
Pour the hot xream mixture into the egg yolk with the mixer still running and keep whisking until it is thick and fluffy
Pour this mixture into the cooled melted chocolate, fold well
Fold in some of the whipped cream to lighten it, then pour half of it into the whipped cream, fold in well.
Pour the last half of the chocolate mixture into the whipped cream and fold.
Note:
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When I made the pate a bombe the first time, I brought the mixture to 245F (softball stage) before pouring it into the egg yolks (the classic pate a bombe mixture) and the resulting pate a bombe is thick and fluffy quickly.
This time, I just boil the cream and pour it in. The resulting pate a bombe is thinner and takes a lot longer to get thick (although not as thick as the classic preparation).
I am not sure which one Mr. Sugino uses as I can't understand Japanese, but both works fine.
Pistachio Mousse (Mousse a la pistache)
Make creme anglaise by boiling the milk, pistachio paste, and vanilla bean in a pot
Meanwhile, whisk the egg yolks and sugar in a bowl
Temper the yolks with the boiled cream and return it back to the pot under a low heat
Keep stirring until the temperature register 84C
Take it off the heat and strain (to avoid some scrambled eggs)
Add the softened gelatin and stir until it melts
Let cool in an icebath
Fold in the whipped cream
Pour the mixture into 18cm baking frame or baking pan that has been lined with plastic wrap, overhanging on the side (for easy removal)
Chocolate Glaze (Glaçage au Chocolat)Make this the last after the cake is completely frozen and you are ready to glaze.
Combine the water, sugar and cocoa powder in a saucepan and bring it to boil
Add the heavy cream and bring back to boil
Take it off the heat and strain
Mix the gelatin in and stir until completely melted
Let cool while occasionally stirring to keep the surface to harden and make it smooth
Assembly
Cut out the pistachio joconde to 18cm square, brush one side with the sirop imbibage and place it on top of the pistachio mousse, brushed side down. Then brush the other side with the syrup.
Freeze
Once frozen, take it out of the freezer and spread 50g of framboise pepins on top
Using a cookie cutter or fondant cutter, cut circles with diameter slightly smaller than the cake ring you will use. (I use 2.5" cookie cutter and 3" cake ring)
Cut the chocolate joconde using the same size of cookie cutter.
Assemble top-side down. Line a baking pan with acetate sheet and place the 3" cake rings (or any size of rings you want) on top.
Pipe some chocolate mousse at the bottom, then place the pistachio mousse-raspberry cut out on top (raspberry side on the top)
Spread some more thin layer of mousse, then lastly place the chocolate joconde circle on top
Freeze until frozen and flip the cake onto a wire rack with baking sheet underneath (to catch the drips when glazing)
Once the chocolate glaze is almost at room temperature (slightly warm but still pourable), pour the glaze on top of the cake and smooth it with spatula
Refrigerate overnight and decorate
Hidemi sugiro