Chocolate Bombe with Hazelnut Ice Cream and Croccante

Adapted by
June 2004
Yield: 22 Servings


Hazelnut Ice Cream
16 ounces heavy cream
16 ounces milk
5 ounces sugar
1 ounce glucose
2 ½ ounces hazelnut paste
8 egg yolks, beaten
2 cups sugar
1 cup water
2 Tablespoons glucose
¾ cup sugar
1 ½ cups egg whites
1 pound , 2 ounces Valrohna Semi Sweet chocolate (56%)
8 ounces unsalted butter
1 ½ ounces light cocoa powder
3 cups heavy cream, divided
6 ounces sugar
11 egg yolks
1 pound toasted hazelnuts, chopped
Chocolate Cake
5 ounces almond flour
4 ounces powdered sugar
5 eggs
1 ounce butter
1 ounce all-purpose flour
½ ounce cocoa powder
6 egg whites
2 ounces sugar
Chocolate Ganache
4 ounces unsalted butter
5 1/3 ounces light corn syrup
26 ounces semi sweet chocolate (64%), chopped
32 ounces heavy cream
Caramel Sauce
1 cup water
2 ounces glucose
16 ounces sugar
24 ounces heavy cream
Hazelnut Sauce
16 ounces heavy cream
16 ounces milk
6 ounces sugar
2 ounces hazelnut paste
8 egg yolks
Hazelnut croccante
3 ounces glucose
3 ounces fondant
1 ounce hazelnuts, crushed


For the Hazelnut Ice Cream

In a medium saucepan, bring heavy cream, milk, sugar, glucose and hazelnut paste to a boil. Slowly add egg yolks to the saucepan. Stir until slightly thickened. Strain mixture through a fine chinoise in a clean bowl. Place bowl in ice bath. When cool, pour mixture into ice cream maker and proceed according to manufacturers instructions. Keep frozen until service.

For the Meringue

Place 2 cups sugar, water, and glucose in a saucepan and bring to a boil. Heat until mixture reaches 248 F. At same time, in an electric mixer, whip egg whites and remaining sugar to soft peaks. Add the syrup slowly to the egg white and sugar mixture. Continue running the mixer at high speed until the meringue becomes glossy. Set aside.

For the Mousse

  In a double boiler over gently simmering water, melt chocolate, butter, and light cocoa powder. In a separate medium saucepan, boil 2 cups of heavy cream and sugar. Slowly add yolks into hot cream and stir to thicken. Transfer saucepan to an ice bath. When cool add to chocolate mixture and stir to combine. Slowly fold 1/3 of the meringue in the chocolate mixture. Repeat 2 more times. In a clean, medium bowl whip remaining 1 cup heavy cream until soft peaks form. Gently fold whipped cream into chocolate mixture. Fold in toasted hazelnuts. Transfer mousse to molds. Freeze for 6 hours.

For the Chocolate Cake

Preheat oven to 325?F. Grease a half sheet pan with butter and line with parchment paper. Place the almond flour, powdered sugar and whole eggs in an electric mixer and beat at high speed for 15 minutes. Transfer mixture to a large mixing bowl. In a small saucepan, melt butter and add to egg mixture. Sift flour and cocoa powder together into a small bowl. Gently fold into egg mixture. With an electric mixer, whip egg whites and sugar to soft peaks. Fold 1/3 of egg whites into batter. Repeat 2 more times. Spread batter evenly in prepared pan. Place pan in oven and bake for 20 minutes, or until tester inserted in center of cake comes out clean.

For the Chocolate Ganache

Place butter, corn syrup and chocolate in a large mixing bowl. In a medium saucepan, bring heavy cream to a boil. Pour over chocolate and stir until well incorporated.

For the Caramel Sauce

In a saucepan, place water, glucose, and sugar. Bring to a boil and cook until golden brown. Slowly add heavy cream. Stir constantly until well incorporated.

For the Hazelnut Sauce

In a medium saucepan, bring heavy cream, milk, sugar, and hazelnut paste to a boil. Slowly add yolks and stir until slightly thick. Let cool.

For the Hazelnut Croccante

In a small saucepan, bring glucose and fondant to a boil and cook until golden brown. Add hazelnuts to saucepan and stir until incorporated. Working quickly while still hot, place 1 Tablespoon of mixture between two Silpats. Flatten with a rolling pin and shape. Repeat with remaining mixture.

To Assemble and Serve

Cut 2 inch pieces of cake with a 2-inch cookie cutter and put on metal rack over a sheet pan. Remove mousse from freezer and unmold, warming slightly with a blowtorch, if necessary, to loosen from mold. Place mousse on top of cake. Using a circular motion, pour a thin layer of ganache over mousse until completely covered. Repeat once more. Let stand for a few minutes. Refrigerate bombes until ready for service. In the center of the plate, pour a circle of ganache. Pour circle of hazelnut sauce around ganache. Pour a circle of caramel sauce around hazelnut sauce. With a skewer, create a design by forming figure 8 shapes through the three rings of sauce. Place bombe in center of sauce. Insert croccante. Serve with a quenelle of hazelnut ice cream.