Chestnut Chocolate Cake
Ready In: 1 hr 45 mins
Serves: 12-14
Ingredients
- 8 ounces best-quality bittersweet chocolate, finely chopped
- 1⁄4 cup cold espresso
- 4 eggs, separated,room temperature
- 10 tablespoons butter, cut into 10 pieces
- 1 tablespoon cognac
- 1 pinch salt
- 1 pinch cream of tartar
- 1⁄2 cup sugar
- 1⁄2 cup cornstarch
Ganache
- 3⁄4 cup whipping cream
- 8 ounces best-quality bittersweet chocolate, finely chopped
- 1 tablespoon cognac
- 10 glaceed chestnuts, chopped coarsely (available at fine food emporiums)
Glaze
- 1 cup whipping cream
- 9 ounces best-quality bittersweet chocolate, finely chopped
- 1 tablespoon cognac
- 1 candied violet (available at fine food emporiums)
- 2 tablespoons crumbled violets
Directions
- For cake: Preheat oven to 350F.
- Butter two, 8 inch round cake pans.
- Line with parchment, cut to fit, butter and lightly flour paper.
- Melt chocolate with espresso.
- Stir until smooth.
- Stir in yolks, one at a time.
- Place over hot water over double-boiler, and warm just until yolks thicken slightly, about 1 minute.
- Remove from over water.
- Stir in butter, one piece at a time, until melted.
- Blend in Cognac.
- Beat whites in large bowl with salt and cream of tartar until soft peaks form.
- Gradually add sugar, beating until stiff but not dry.
- Beat in cornstarch.
- Stir ¼ of whites into chocolate mixture to lighten.
- Fold in remaining whites and pour into prepared pans.
- Bake until edges are firm, but inside is still slightly creamy, about 25 minutes.
- Cool in pans; cakes will deflate.
- Remove from pans and brush off crumbs.
- For ganache: Bring cream to boil in small saucepan over low heat.
- Remove from heat.
- Pour into mixing bowl.
- Add chocolate, cover, and let stand 5 minutes.
- Stir gently until chocolate is melted.
- Add Cognac.
- Refrigerate until mixture just begins to thicken.
- Beat at medium-high speed until light, increased in volume, and just beginning to form soft peaks.
- Cut out piece of cardboard slightly smaller than cake.
- Wrap in foil, set on rack.
- Top with 1 cake layer.
- Spread with ganache.
- Sprinkle with chopped chestnuts.
- Top with second layer.
- Press with baking sheet to level.
- Smooth edges.
- Refrigerate until ganache is chilled.
- (can be prepared up to 2 days ahead) For glaze: Bring cream to boil in medium saucepan.
- Remove from heat.
- Add chocolate, cover, and let stand 5 minutes.
- Stir gently until chocolate is melted.
- Blend in Cognac.
- Cool glaze until just warm to touch.
- Reserve ½ cup.
- Pour remainder over cake, tilting back and forth so glaze drops to coat sides.
- Smooth with offset spatula.
- Transfer to platter.
- Cool reserved glaze until set.
- Spoon half of reserved glaze into pastry bag fitted with small plain tip.
- Pipe crisscross pattern over top and sides of cake.
- Carefully sprinkle crumbled violets in a thick border around outer edge of cake.
- Brush off any violet crumbs that dont make it.
- Fit bag with leaf tip; spoon in remaining glaze.
- Pipe leaves around bottom.
- Set violet in center.
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