HAZELNUT FLAVORED LIQUEUR RECIPES

Steps:

• Preheat the oven to 325 degrees F (165 degrees C). Grease and flour a 9-inch springform pan. Grind hazelnuts until very fine. Add baking powder and set aside.
• In a large bowl, whip the egg yolks with the sugar until pale yellow in color. Beat in the ground hazelnut mixture.
• In a separate CLEAN bowl, with a CLEAN whisk, whip the egg whites until stiff. Quickly fold 1/3 of the egg whites into the yolk mixture, then add the remaining whites and fold in until no streaks remain.
• Pour into a 9 inch springform. Bake in preheated oven for 60 to 75 minutes, or until top of cake springs back when lightly tapped. Cool on wire rack.
• When cake is cool, slice horizontally into 3 layers. Whip the cream until stiff, and spread generously between layers, on top and on the sides of the cake. Sprinkle chopped hazelnuts on top for decoration.

Steps:

• Place racks in upper and lower thirds of oven; preheat to 350°. Toast hazelnuts on a rimmed baking sheet, tossing once, until golden brown, 8–10 minutes. Let cool, then very coarsely chop. Reduce oven heat to 325°.
• Separate yolk from 1 egg over a small bowl to catch egg white. Place yolk in another small bowl. Set egg white aside for brushing dough. Crack remaining 2 eggs into bowl with yolk. Add espresso powder and beat with a fork to combine and dissolve.
• Whisk flour, baking powder, and salt in a medium bowl. Using an electric mixer on medium speed, beat butter and 1 cup (200 g) sugar until light and creamy, about 2 minutes. Scrape down sides of bowl, then add egg yolk mixture and coffee extract; beat just to combine. Scrape down sides of bowl and beat until smooth. Add dry ingredients and mix on low speed to combine. Add hazelnuts and chocolate and mix just to evenly distribute. Divide dough evenly between 2 parchment-lined baking sheets. Run your hands under cold water, then shape each dough mound into a 5" square about 1" thick. Beat reserved egg white with a fork until foamy and brush over loaves (you won’t need all of it). Sprinkle very generously with sugar.
• Bake loaves, rotating baking sheets top to bottom and front to back halfway through, until firm in the center and starting to crisp at the edges, 30–35 minutes. (They will spread quite a bit as they bake.) Transfer baking sheets to wire racks; let loaves cool 15 minutes.
• Working one at a time, carefully transfer loaves to a cutting board. Using a serrated knife, slice ½" thick. Arrange biscotti cut side down on baking sheets and bake, rotating baking sheets top to bottom and front to back halfway through, until dry and crisp, 30–35 minutes. Transfer baking sheets back to racks and let biscotti cool. Do ahead: Biscotti can be baked 1 week ahead. Store airtight at room temperature.