Opera Cake
Ingredientsfor 2
540
Cal
8g
Protein
42g
Carbs
38g
Fat
- 16 large eggs, separated
- 2¾ cup almond flour
- 3¾ cup powdered sugar
- 4¼ cup all-purpose flour
- 53 tablespoons unsalted butter, melted
- 6½ cup strong espresso with 2 tablespoons rum
- 78 oz dark chocolate (70%), chopped
- 81 cup heavy cream
- 93 tablespoons unsalted butter for ganache
- 10¾ cup sugar
- 11¼ cup water for syrup
- 126 large egg yolks
- 131½ cups unsalted butter, room temperature, for buttercream
- 142 tablespoons instant espresso dissolved in 2 tablespoons hot water
Instructions
- 1
Make the joconde sponge: beat egg whites to stiff peaks. Fold in almond flour, powdered sugar, flour, whole eggs, and melted butter. Bake in two thin 12×16 inch sheets at 425°F for 7 minutes until just set. Cool completely.
- 2
Make the coffee buttercream: cook sugar and water to 245°F. Drizzle over beaten yolks while whipping. Cool, then beat in room-temperature butter gradually and add dissolved espresso.
- 3
Make the ganache: bring cream to a boil, pour over chopped chocolate, wait 1 minute, then whisk with butter until smooth.
- 4
Assemble with four layers: sponge (soaked with espresso-rum syrup), coffee buttercream, sponge (soaked), chocolate ganache, sponge (soaked), buttercream. Pour remaining ganache over the top for a smooth, shiny finish. Refrigerate at least 3 hours before trimming edges cleanly and serving.