Chocolate Mousse Cake Part One
Submitted by jcharuk
Chocolate mousse cake with semisweet chocolate, orange liqueur, and whipped egg whites folded into a rich batter. Part one covers the cake layers with a thin, flaky crust.
YIELD
1 cakePREP
25 minCOOK
35 minREADY
1 hrsThis chocolate cake is built like a French genoise with a serious chocolate backbone. Eight eggs get separated and treated differently: yolks beaten with sugar until they fall in thick ribbons, whites whipped stiff with cream of tartar for structure. Melted semisweet chocolate and butter fold into the yolks, then everything comes together with just enough cake flour to hold its shape.
Orange liqueur (Grand Marnier, Cointreau, or triple sec) and fresh orange zest add a citrus brightness that cuts through the richness. That chocolate-orange combination is classic French pastry, and it works beautifully here.
The folding technique is where this cake lives or dies. Stir one quarter of the beaten whites into the batter first to lighten it, then gently fold in the rest in batches along with the sifted flour. Aggressive mixing deflates the whites and gives you a dense, flat cake instead of the airy, mousse-like crumb you’re after.
Chef Tips
- Bring eggs to room temperature before separating. Cold whites don’t whip to full volume, and cold yolks resist forming a ribbon.
- Melt the chocolate over hot water, not boiling. Boiling water can cause the chocolate to seize into a grainy mess.
- Sift the cake flour onto wax paper and fold it in small batches. Dumping it all at once creates flour pockets that won’t incorporate.
- The baked cakes form a thin crust that flakes off during handling. This is normal and expected. The interior should be moist and mousse-like.
Variations
- Espresso version: Replace the orange liqueur with Kahlua and add a tablespoon of instant espresso to the melted chocolate.
- Dark chocolate: Use bittersweet chocolate (70% cacao) instead of semisweet for a more intense, less sweet cake.
- Raspberry pairing: Fill between the layers with fresh raspberry preserves. The tartness is a natural match for the rich chocolate.
Ingredients
Directions
FOR THE CAKES: Butter two 9” round cake pans and line the bottoms with wax paper, then butter the paper. Dust the pans with flour and knock out the excess. Preheat the oven to 350℉ (180℃).
In the top of a double boiler, heat the chocolate over hot water, stirring, until just melted. Remove the pan from the heat and stir in the butter, one tablespoon at a time.
Continue to stir the mixture until smooth. In the bowl of the mixer, beat the egg yolks until combined. Add ¾ cup of the sugar, a little at a time, and continue to beat the mixture until it falls in a ribbon when the beater is lifted.
Beat in the melted chocolate mixture, the liqueur and the orange pinch of salt until frothy. Add the cream of tartar and beat the whites until they hold soft peaks. Add the remaining ¼ cup sugar, a little at a time, and beat the whites until they are stiff.
Sift the flour with the remaining ¼ teaspoon salt onto a sheet of wax paper. Stir one fourth of the whites into the batter. Fold in the remaining whites and sift and fold the flour mixture in batches into the egg mixture until just combined.
Pour the batter into the cake pans, smoothing the tops, and bake the layers in the middle of the oven for 30 to 35 minutes, or until a cake tester inserted into the centers comes out clean.
Let the cakes cool in the pans on racks for 5 minutes, invert the cakes onto the racks, and remove the wax paper carefully. Let the cakes cool completely. The cakes form a thin crust that will flake off.
SEE PART TWO
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