Ingredients
Equipment
Method
- Preheat the oven to 350°F (180°C). Grease two 8-inch round pans and line with parchment paper.
- Sift together the flour, sugar, cocoa powder, baking powder, baking soda, and salt in a large bowl.
- In another bowl, whisk the eggs, milk, sour cream, vegetable oil, and vanilla until smooth.
- Pour the wet mixture into the dry ingredients and stir gently until combined.
- Mix hot water with espresso powder and whisk into the batter. Divide the batter between the pans.
- Bake for about 35 minutes until a toothpick comes out clean. Cool completely in the pans on a wire rack.
- For the mousses, chop dark and white chocolate and place in separate bowls.
- Whisk egg yolks until pale. Heat 1 cup of heavy cream with vanilla and warm. Slowly pour into yolks while whisking, then return to saucepan and cook until thickened.
- Pour custard over chopped chocolate, let sit, then stir until smooth. Cool to room temperature.
- Whip remaining heavy cream to stiff peaks. Fold half into each chocolate mixture gently.
- To assemble, place one cooled cake layer on a dessert ring or springform pan.
- Spread the dark chocolate mousse over the cake layer and chill for 30 minutes.
- Pour white chocolate mousse over the set dark layer and smooth the top. Chill for another 30 minutes.
- Place the second cake layer on top and let the entire cake chill in the fridge for at least 4 hours, or overnight.
- For the ganache, heat heavy cream until simmering. Pour over chopped milk chocolate and stir until smooth. Let cool until thickened.
- Remove the cake from its mold and pour ganache over the top, letting it drip down the sides. Decorate as desired.
Nutrition
Calories: 430kcalCarbohydrates: 52gProtein: 6gFat: 22gSaturated Fat: 12gPolyunsaturated Fat: 1gMonounsaturated Fat: 7gCholesterol: 75mgSodium: 250mgPotassium: 250mgFiber: 2gSugar: 30gVitamin A: 8IUCalcium: 8mgIron: 15mg
Notes
For best results, make the cake layers a day ahead and chill overnight. The mousse sets better if all components are at the right temperature when combined. Store leftover cake in the refrigerator for up to 5 days; it tastes even better as it sits! For a lighter option, consider substitutions like Greek yogurt for sour cream or dairy-free alternatives. Enjoy your baking adventure!
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