- What is Joconde sponge?
- A sponge made with almond flour, which is thinner, more flexible, and more flavoursome than traditional sponge.
- Why soak the layers?
- The thin sponge dries out quickly; the coffee syrup not only flavours it but also keeps it moist.
French Opera Cake
Ingredients
Equipment Needed
- Baking sheet (large tray)
- Palette knife
- Whisk
- Saucepan for the syrup
Allergen Information
Instructions
Preheat the oven to 200°C (high heat is needed for the thin sheet). Line a large baking tray with baking parchment.
Mix the almond flour, plain flour, and 100g sugar. Whisk the eggs until frothy, and fold in the dry mixture.
Melt half of the butter (75g) and drizzle into the batter. Spread the mixture thinly onto the tray.
Bake for 10-12 minutes until it just gets some colour. Turn onto a wire rack, peel off the paper, and cool.
Ganache: bring the cream to the boil, pour over the chopped chocolate, and stir until smooth.
Coffee syrup: mix the hot espresso with the sugar syrup.
Cut the sponge into 3 equal parts. Soak the first one with syrup, spread with the coffee buttercream made from the remaining butter and sugar (or just ganache if you want it simpler).
Soak the next layer too, spread with ganache. Top with the third layer.
Coat the top with melted chocolate, chill, then trim the edges (so the layers are visible).
Recipe FAQ
Ingredients
- 100 g Plain flour
- 100 g Almond flour (finely ground)
- 200 g Caster sugar
- 4 pcs Eggs
- 150 g Butter
- 200 g Dark chocolate (min. 60%)
- 300 ml Double cream
- 100 ml Strong espresso coffee
- 50 ml Sugar syrup (water and sugar boiled in 1:1 ratio)
- 1 tsp Vanilla extract
- 1 pinch Salt
- 10 g Cocoa powder (for decoration)