The August 2009 Daring Bakers' challenge was hosted by Angela of A Spoonful of Sugar and Lorraine of Not Quite Nigella. They chose the spectacular Dobos Torte based on a recipe from Rick Rodgers' cookbook Kaffeehaus: Exquisite Desserts from the Classic Caffés of Vienna, Budapest, and Prague.
The Dobos Torta is a five-layer sponge cake, filled with a rich chocolate buttercream and topped with thin wedges of caramel. It was invented in 1885 by József C. Dobos, a Hungarian baker, and it rapidly became famous throughout Europe for both its extraordinary taste and its keeping properties. I made this recipe with a good friend of mine who is an extremely experienced baker. While I liked its rich chocolate flavor, this recipe was almost too labor intensive for the two of us to complete. Needless to say, it's a great recipe to try once, but perhaps only once.
Dobos Torte:
Serves 12
Ingredients:
Sponge Cake Layers:
6 large eggs, separated, at room temperature
1 1/3 cup confectioner's sugar
1 teaspoon vanilla extract
2 cups flour
2 tablespoons cornstarch
pinch of salt
Chocolate Buttercream:
4 large eggs at room temperature
1 cup sugar
4 oz baker's chocolate, finely chopped
2 sticks plus 2 tablespoons butter, at room temperature
Caramel Topping:
1 cup sugar
12 tablespoons water
8 teaspoons lemon juice
1 tablespoon neutral oil (sunflower, grapeseed, rice bran, etc)
Finishing Touches:
Hazelnuts, some whole, some chopped.
Directions for the Sponge Layers:
Preheat oven to 400°F.
Cut six pieces of parchment paper to fit on your baking sheet. Trace the bottom of a 9-inch springform pan to create a template for pouring a layer of sponge cake. Flip parchment paper over, so that food does not touch the ink of the tracing.
Beat egg yolks and 2/3 cup confectioner's sugar, and vanilla in a large bowl with a mixer for about 3 minutes, or until the mixture is thick and pale yellow. In another bowl, beat egg whites until soft peaks form. At this time, beat in remaining confectioner's sugar until stiff peaks form. Stir 1/4 of this mixture into the egg yolk mixture. After completely mixed, fold in remaining egg whites. Combine flour and salt and sift into bowl in two parts, folding flour into batter.
Line two baking sheets with parchment paper, and use 3/4 cup of batter to fill in each template. Place in oven for 5 minutes, or until cake is no longer sticky. The lower baking sheet will need to bake longer than the upper sheet. If you take out the sheets too early, the cake layers will stick to the parchment paper. Once you remove a cookie sheet from the oven, invert cake onto a flat surface and peel off the parchment paper. Place upside-down back onto the parchment paper to cool. Quickly rinse cookie sheet in cold water to cool off before putting on another traced sheet of parchment paper and more batter. Repeat for all 6 layers.
Instructions for Chocolate Buttercream:
Whisk eggs with sugar, until thickened. Cook egg mixture in a double broiler for 2-3 minutes. Whisk in chocolate and continue stirring for another 2-3 minutes. Remove from heat and scrape into another bowl to cool to room temperature. When cool, beat in butter with a spatula.
Instructions for Caramel Topping:
Choose the best looking cake layer for the top, and cut into 12 slices. Place onto another cookie sheet covered with parchment paper.
Stir sugar, water, and lemon in a sauce pan, and evaporate out the water, forming a sticky caramel sauce. Oil a spoon to help spread hot caramel sauce over cake layer pieces and let harden. Once completely cooled, use an oiled knife to break apart the caramel topping at the previously cut lines. This was the hardest step for us to accomplish; the caramel just did not want to cut!
To Assemble the Dobos Torte:
On your serving platter, place a small dab of chocolate buttercream to prevent cake from sliding. Place a layer of cake down, and cover with frosting. Continue laying down remaining layers of cake and frosting. Completely cover the top and sides of the cake with the chocolate buttercream, and top with the caramel topping wedges, propped up by extra frosting and hazelnuts. Sprinkle on chopped hazelnuts for a richer flavor.