For the Chocolate Ganache:
For the Dark Chocolate Mousse:
For the White Chocolate Mousse: (optional)
For the Vanilla Buttercream
Step 1: Prepare Chocolate Cake
Preheat the oven to 350°F (175°C). Grease and flour two 8-inch round cake pans.
Sift flour, sugar, cocoa powder, baking powder, and baking soda.
Blend in sugar, espresso powder, and salt in a large bowl.
Add buttermilk, sour cream, vegetable oil, eggs, and vanilla extract. Mix until well combined.
Stir in boiling water until the batter is smooth.
Divide the batter evenly between the prepared pans and bake for 35–40 minutes, or until a toothpick inserted comes out clean.
Allow the cakes to cool completely.
Step 2: Make Dark Chocolate Mousse
Separate eggs and yolks. Place the whites in a large bowl and the yolks in a small bowl.
Melt the chopped semi-sweet dark chocolate and unsalted butter using a double boiler or in short bursts in the microwave. Allow it to cool slightly.
Whisk yolks, vanilla extract, and a pinch of salt until uniform.
In a separate bowl, whip the heavy cream until stiff peaks form. Be careful not to over-whip.
Whip whites: - Add sugar and beat whites until firm peaks form.
Fold together all ingredients
Check the temperature of your semi-sweet dark chocolate; it should be warm and runny. ideal 40C
Pour chocolate into cream yolk mixture. Fold through, and streaks are fine.
Fold chocolate cream yolks into whipped cream using a rubber spatula. Some streaks are fine.
Gently fold a 1/4 of beaten egg whites into the chocolate. Fold through until incorporated.
Pour chocolate mixture into egg whites. Fold through until incorporated and has no lumps.
Refrigerate the dark chocolate mousse until you are ready to assemble the Tuxedo cake.
Step 3: Make the White Chocolate Mousse
Separate egg and yolk. Place the whites in a medium bowl and the yolk in a small bowl.
Melt the chopped white chocolate and unsalted butter using a double boiler or in short bursts in the microwave. Allow it to cool slightly.
Whisk egg yolk and sugar until its bright and uniform.
Add vanilla extract and a pinch of salt and whisk slightly.
Whip whites: - Beat whites until firm peaks form.
In a separate bowl, whip the heavy cream until stiff peaks form. Be careful not to over-whip. Return it back to the fridge till you are ready to use it.
Temper white chocolate: Add a bit of melted white chocolate into the egg yolk mixture.
Fold the yolk mixture into the rest of the melted white chocolate.
Return the white chocolate & yolk mixture to the double boiler and whisk lightly before removing it from the heat.
Fold together all ingredients
Fold the white chocolate & yolk mixture into the whipped cream.
Gently fold egg whites until well incorporated.
Refrigerate the white chocolate mousse until you are ready to assemble the Tuxedo cake.
Step 4: Make Chocolate Ganache
Heat heavy cream in a saucepan until it simmers.
Pour hot cream over chopped chocolate in a bowl. Let it sit for a minute, then stir until smooth.
Allow the ganache to cool to a spreadable consistency.
Step 4: Prepare Vanilla Buttercream
In a large bowl, beat softened butter until creamy.
Gradually add powdered sugar, milk, vanilla extract, and a pinch of salt. Beat until smooth and fluffy.
Step 5: Assemble the Tuxedo Cake
To achieve a four layered chocolate cake, use a large serrated knife to cut each cake in half.
Level the chocolate cakes using a cake leveler or serrated knife. Make sure that all four chocolate cake rounds are even.
Place one cake layer on a serving plate. Pipe a ring of vanilla buttercream around the circumference of the chocolate cake.
Spread a layer of dark chocolate mousse.
Place the second chocolate cake layer and repeat the buttercream process this time with a layer of white chocolate mousse.
Repeat the process till all chocolate cakes are used and finishing with a layer of ganache on top.
1. Chocolate: You must use COOKING chocolate, not eating chocolate. Cooking chocolate (found in the baking aisle). I use bittersweet dark chocolate Lindt 70%.
2. Eggs: I find that whites fluff up better if they are at room temperature. Secondly, this mousse recipe uses raw egg yolks, as I find that I get better results with them. Make sure you use good-quality pasteurized eggs. Note: Raw eggs are not advisable for pregnant women or babies to consume.
3. Non-egg chocolate mousse recipes: There are plenty of substitutes on mousse recipes that have no egg; feel free to substitute with those instead if you wish, i.e. you can opt for an easier cream cheese mousse recipe.
4. Cream: You must use full-fat cream that can be whipped—pure cream (35% fat), thickened cream (35% fat), or heavy cream (35–40% fat). Do not use pouring cream that cannot be whipped.
5. Working with white chocolate: You will find that it can be challenging to work with white chocolate as it is temperature sensitive; therefore, try to pick up your pace. Have all your ingredients lined up and ready to go.
6. Melting the chocolate: Ensure that the bottom of your glass heat-proof bowl does not touch the actual water level (if using the double boiler method) so that you don't scorch the chocolate.
7. Assembling your Tuxedo Cake: If you are a beginner baker, feel free to assemble your cake the next day, as it can be overwhelming to get all the steps done in one day.
Calories: 600kcal | Carbohydrates: 75g | Protein: 6g | Fat: 35g | Saturated Fat: 20g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 9g | Cholesterol: 160mg | Sodium: 270mg | Potassium: 220mg | Fiber: 5g | Sugar: 55g | Vitamin A: 930IU | Vitamin C: 0.4mg | Calcium: 125mg | Iron: 3.5mg
Nutritional info is an estimate and provided as courtesy. Values may vary according to the ingredients used. Please use your preferred nutritional calculator for more detailed and personalised calculations.