Line a d=16 cm | 6.3 inch dish with baking paper and preheat the oven to 338F | 170C.
Vanilla sponge cake
- Mix and sift together the flour, baking powder, and salt.
- Whisk the room temperature eggs with the sugar until thick and fluffy. If you have a hand mixer, this will take some time (15 minutes or more). The mass will increase in volume, become light, and drip lazily from the whisk.
- Combine the butter and milk and mix well.
- Add half of the dry ingredients to the egg mixture, and stir gently with a spatula from the bottom to the top.
- Add about 3-4 tablespoons of the resulting batter to the milk and butter mixture, mix well until smooth, and add half of it back into the batter.
- Add the remaining flour, then the other half of the butter mixture. At the very end, add boiling water.
- Bake until a toothpick comes out clean, about 50-60 minutes (baking time varies depending on the oven). Cool the sponge cake and cut it into 3 layers.
- For the syrup, bring water and sugar to boil and brew coffee. Leave to cool.
- Melt chocolate in a microwave in short pulses and allow it to cool to room temperature.
- Whip the mascarpone, cream, and powdered sugar on low mixer speed. It will take about a minute - do not overmix as the cheese may lump.
- Add the chocolate, stir to combine, pour in the syrup, and place in the fridge until ready to use.
- Melt the chocolate and cream in the microwave and stir until smooth.
- Add the soft butter and honey and beat with a blender. (If the honey is crystallized, warm it up a bit).
- Put the ganache in the fridge for about an hour, and you can cover the cake.
- Put a small amount of frosting (1-2 mm | 0.05 inch) on the cake board.
- Place the first cake and generously soak it with the syrup. Spread a layer of chocolate and coffee frosting.
- Soak the second cake with the syrup on both sides and cover it with a layer of frosting.
- Put the final cake with the soaked side down and smear a thin layer of frosting on top (1-2 mm | 0.05 inches).
- Cover the cooled cake with chocolate ganache (mind that it sets pretty quickly).
You can call the guests!