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Triple Chocolate Mousse Cake

Triple Chocolate Mousse Cake

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A perfect cake for afternoon tea.

  • Total Time: 2 hours 20 minutes
  • Yield: 12

Ingredients

Units

for the first layer,

  • 6 tablespoons (85 grams) butter unsalted
  • 200 grams of chopped semisweet chocolate
  • 3/4 teaspoon of instant coffee
  • 1 1/2 teaspoon vanilla extract
  • 4 large eggs separated
  • pinch of salt
  • 1/3 cup brown sugar

For the middle layer,

  • 2 tablespoons cocoa powder (unsweetened)
  • 5 tablespoons hot water
  • 200 grams of chopped semisweet chocolate
  • 1 1/2 cups fresh whipping cream
  • 1 tablespoon sugar
  • pinch of salt

For the layer of white chocolate,

  • 3/4 teaspoon powdered gelatin
  • 1 tablespoon water
  • 170 grams of chopped white chocolate
  • 1 1/2 cups fresh whipping cream

Instructions

  1. First cake layer: Prepare a cheesecake pan (9″), and place a circle of parchment paper at the bottom. Preheat oven to 325F or 160C.
  2. Assemble a steam bath, and place 1″ of water in a pot where you can set a glass or metal bowl above. The water must not touch the bottom of the bowl. Heat the water over medium heat until boiling, and reduce down to a minimum. In the bowl: combine butter, chocolate, and coffee. Stir occasionally until all the chocolate is melted and looks glossy. Remove from heat and let cool for 5 minutes. Add vanilla and egg yolks, and stir until incorporated.
    Melting the chocolate on a water bath.
  3. With a mixer: beat the egg whites and salt on medium speed until foamy, 2 minutes. Add the brown sugar while making sure there are no large pieces, and continue beating on low speed for 1 minute until all the sugar is incorporated. Then beat at high speed until the meringue forms stiff peaks, about 4 minutes.
    Hard peak meringue with brown sugar.
  4. With a spatula, incorporate 1/3 of the meringue into the chocolate mixture, and stir in a circular motion. Add the remaining meringue with light movements, have patience.
  5. Place the batter into the pan and smooth the surface with a knife. Bake until it has risen and is firm around the edges, 15-18 minutes. Remove to a wire rack and let cool. Run a knife along the side of the pan to prevent cracks. Do not remove it from the pan.
    First layer before the oven. Cooked first layer.
  6. For the middle layer: Mix the chocolate powder and water together in a cup, and stir. Heat the water/steam bath and melt the chocolate, stirring occasionally. Remove from heat and let cool for 5 minutes.
  7. With a mixer in a cold bowl: beat cream, sugar, and salt until stiff peaks form, about 4 minutes. Add the dissolved cocoa mixture and continue beating on medium speed until incorporated. Mix 1/3 of the whipped cream with the melted chocolate with a spatula. Then add the rest and mix using soft movements. Place the mousse over the cake and smooth the top. Clean the rim of the pan. Refrigerate for at least 15 minutes.
    Whipped cream with cocoa. Adding melted chocolate to whipped cream. Chocolate whipped cream. Middle layer on the cake pan.
  8. For the white chocolate layer: Sprinkle gelatin over water in a small bowl and let stand for 5 minutes to hydrate. Place the chopped white chocolate in a bowl. In a small saucepan, heat 1/2 cup of cream until it boils. Remove from heat, add the gelatin, stir and pour the mixture over the white chocolate. Let stand for 1 minute. Then stir until everything is incorporated and the chocolate is fully melted. If chocolate pieces remain, melt over the water bath—cool for 10 minutes.
  9. With a mixer, beat the remaining cup of cream until it holds firm peaks—about 4 minutes. Incorporate 1/3 of the cream into melted white chocolate. Then add the rest with soft movements. Place on top of the previous layer of mousse. Smooth with a spatula or knife. Refrigerate for at least 3 hours before serving.
    Melted white chocolate. Last layer in the cake mold.
  10. Garnish with chopped chocolate or cocoa powder.
    Triple Chocolate Mousse Cake

Notes

Recipe adapted from Annie’s Eats.

  • Author: Pilar Hernandez
  • Prep Time: 2 hours
  • Cook Time: 20 minutes
  • Category: Cakes
  • Method: Oven
  • Cuisine: International