CAKE - Cashew Gateau With Coffee Cardamom Mousse

By Aemelia

Ingredients

• For the gateau:
• 3/4 cups cashew, toasted/skinned
• 1/3 cup cake flour, unsifted
• 1 Tbsp. cornstarch
• 3 large egg yolks
• 1/2 cup sugar, divided (2Tb & 6 Tb)
• 1/2 tsp. vanilla extract
• 1/2 tsp. grated lemon rind
• 2 lg. egg whites
• 2 Tb melted butter, cooled
• For the coffee cardamom mousse:
• 1/2 teaspoon ground cardamom
• 1/2 cup espresso or strong coffee
• 1/4 cup sugar
• 1 tsp powdered unflavored gelatin, softened in 1 tablespoon cold water
• 1 cup heavy cream, cold
• For the chocolate ganache:
• 1/2 cup heavy cream
• 3/4 cup chopped chocolate or chocolate chips (about 6 oz or 180 gr)

Details

Adapted from tarteletteblog.com

Preparation

Step 1

For the gateau:
Position rack in the lower 3rd of the oven and preheat to 350 degrees. Grease and flour a 8” X 4” inch round springform pan. Using a food processor, process nuts, cake flour, and cornstarch for about 30 seconds. Then, pulse the mixture about 10 times to get a fine, powdery mixture. While you want to make sure there aren’t any large pieces, don’t over-process. Set aside.
Put the yolks in the bowl of an electric mixer, with the paddle attachment, and beat until thick and light in color, about 3-4 minutes on med-high speed. Slowly, add 8 Tb of sugar. It is best to do so by adding a tablespoon at a time, taking about 3 minutes for this step. When finished, the mixture should be ribbony. Blend in the vanilla and grated lemon rind. Remove and set aside.
Place egg whites in a large, clean bowl of the electric mixer with the whisk attachment and beat on medium speed, until soft peaks. Increase to med-high speed and slowly add the remaining 2 Tb of sugar, over 15-20 seconds or so. Continue to beat for another ½ minute. Fold the yolk mixture to the whites. Pour the warm butter in a liquid measure cup (or a spouted container). Put the nut meal in a mesh strainer (or use your hand – working quickly) and sprinkle it in about 2 tablespoons at a time – folding it carefully. Be sure to exclude any large chunks/pieces of nuts. Again, work quickly and carefully as to not deflate the mixture. When all but about 2 Tbsp. of nut meal remain, quickly and steadily pour the warm butter over the batter. Then, with the remaining nut meal, fold the batter to incorporate. With a rubber spatula, transfer the batter into the prepared pan, smoothing the surface with the spatula or back of a spoon. Tap the pan on the counter to remove air bubbles and bake in the preheated oven for 30-35 minutes. You’ll know the cake is done when it is springy to the touch and it separates itself from the side of the pan. Remove from oven and allow to stand for 5 minutes. Invert onto a cake rack sprayed with nonstick coating, removing the pan. Cool the cake completely.

For the coffee cardamom mousse:
In a mediu saucepan, bring the coffee, sugar and cardamom to a simmer. Remove from the heat and stir in the gelatin until it is completely dissolved. Let cool to room temperature. In the bowl of a stand mixer with the whisk attachment or with hand held beaters with balloon whisks, whipe the cream just until it holds stiff peaks, do not overbeat or it will become grainy and separate. Add a small amount first to the coffee mixture to loosen up the batter, slowly fold the rest of the whipped cream. Do not let it set completely before using it for the cake filling (have your cake baked, cooled, and cut before using)

For the chocolate ganache:
In a medium saucepan, bring the cream to a simmer, remove from the heat and add the chocolate. Let it sit for 5 minutes so that the chocolate starts to melt then slowly stir the cream and chocolate until they come together to make the ganache. Let cool slightly before using it over the cakes.

To assemble:
Cut 4 rounds out of the 8 inch cake and cut each round in half. Using 4 3 inch round pastry rings, place a cake round at the bottom of each ring, top with about 1/4 cup of coffee mousse, top with another cake round and let sit overnight. In the morning, make the ganache. Line a sheet pan with a sheet of parchment paper, position a cooling rack or a grid over it, position your cake over the grid and slowly pour the ganache over all the cakes to cover the completely. Rap the sheet over the counter top (be gentle, no jumping cakes allowed!), to let the ganache fall evenly. Let them set in the fridge for a couple of hours. You can dust them with a good coat of cocoa powder if desired like I did here.