Ingredients:
For the chocolate biscotti:
1 and 1/2 cups all-purpose flour
1/2 cup unsweetened cocoa powder, sifted
1 and 1/2 teaspoons baking powder
1/4 teaspoon salt
120g unsalted butter, at room temperature
1 cup caster sugar
2 large eggs, at room temperature
1/2 cup hazelnuts, chopped
1/2 cup mixed peel orange and lemon
For the egg wash:
1 large egg
1 teaspoon water
1/2 teaspoon granulated sugar
For the chocolate glaze:
375g dark cooking chocolate, roughly chopped
1 espresso shot
1 tablespoon neutral oil (such as vegetable/rice bran)
1/3 cup hazelnuts, finely chopped