Rigo Jancsi Chocolate Cake

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Named after a turn-of-the-century Roma violinist whose elopement with a Belgian princess turned him into a Budapest celebrity, Rigo Jancsi is a classic Hungarian café cake built from two whisper-thin cocoa sponges sandwiched with a thick layer of chocolate buttercream and finished with a pour of glossy dark ganache. Despite its rich appearance, the sponge is genuinely light, and the bittersweet chocolate flavor keeps it from feeling heavy. It is the kind of cake that slices cleanly and travels well, which is why it became a fixture of Austro-Hungarian coffee houses.

Nutrition Facts

Per serving (estimated)

• 410 kcalCalories
• 26 gFat
• 15 gSaturated Fat
• 40 gCarbs
• 3 gFiber
• 28 gSugar
• 5 gProtein
• 95 mgSodium
• 220 mgPotassium
• 45 mgCalcium
• 3.5 mgIron
• 0 mgVitamin C
• 280 mcgVitamin A

Ingredients

For the cocoa sponge

• 4 large eggs, separated, room temperature
• 100 g granulated sugar, divided
• 30 g Dutch-process cocoa powder
• 80 g all-purpose flour, sifted
• 1 tsp vanilla extract
• 1/4 tsp fine salt

For the chocolate buttercream filling

• 200 g dark chocolate (60-70%), finely chopped
• 150 g unsalted butter, softened
• 150 g powdered sugar, sifted
• 3 tbsp apricot preserves
• 1 tsp vanilla extract

For the chocolate ganache topping

• 120 g dark chocolate (60-70%), finely chopped
• 100 ml heavy cream
• 1 tbsp unsalted butter

Directions

1. Preheat the oven to 180°C (350°F). Grease two 20 cm (8 inch) round cake pans, line the bases with parchment, and dust the sides lightly with cocoa.
2. In a large bowl, whisk the egg yolks with half of the granulated sugar and the vanilla for 3-4 minutes, until the mixture is pale, thick, and leaves a ribbon when the whisk is lifted.
3. In a separate clean bowl, beat the egg whites with the salt to soft peaks. Sprinkle in the remaining sugar a tablespoon at a time and continue beating to stiff, glossy peaks.
4. Sift the cocoa powder and flour together over the yolk mixture and fold gently with a spatula. Fold in the egg whites in three additions, using a cutting and turning motion so the batter stays airy and does not deflate.
5. Divide the batter evenly between the prepared pans, smooth the tops, and bake for 18-22 minutes, until the sponges spring back when lightly pressed and a tester comes out clean. Cool in the pans for 10 minutes, then turn out onto wire racks and peel off the parchment.
6. Make the filling: melt the 200 g chopped chocolate over a bain-marie or in short microwave bursts, stirring until smooth, then let it cool to room temperature but still fluid. Beat the softened butter with the powdered sugar until pale and fluffy, blend in the melted chocolate and vanilla, and finally fold in the apricot preserves.
7. Assemble the cake: place one sponge on a serving plate, spread the chocolate filling almost to the edges, and top with the second sponge, pressing very gently to level. Refrigerate for 20-30 minutes to firm up the filling.
8. Make the ganache: warm the cream in a small saucepan until it just simmers, pour it over the 120 g chopped chocolate, and let it stand for 2 minutes. Whisk from the center outward until smooth and glossy, then stir in the butter. Pour the ganache over the chilled cake, nudging it to the edges so it drips attractively down the sides. Chill for at least 1 hour before slicing.

Cook’s Notes

• Use Dutch-process cocoa for the deep brown color and mellow bitterness that defines this cake; natural cocoa will make the sponges look reddish and taste sharper.
• Fold the batter gently and only until no streaks remain – overmixing is the fastest way to deflate the sponges and produce a dense, bready cake.
• If your sponges dome in the oven, level them with a serrated knife once cool so the finished cake sits flat and the ganache distributes evenly.
• The flavor actually improves after resting overnight in the refrigerator, as the buttercream sets and the layers meld.
• Slice with a long knife dipped in hot water and wiped dry between cuts for bakery-clean wedges.

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