Angel food cake with cacao nibs and orange freckles

Cake:
1 cup (120g) cake flour (homemade: 100g all purpose flour + 20g corn starch)
120g confectioners’ sugar
12 egg whites (336g), room temperature
1/8 teaspoon table salt
1 teaspoon cream of tartar
1 ¼ cups (250g) granulated sugar
2 teaspoons vanilla extract
finely grated zest of 1 large orange
85g (3oz) cacao nibs, mixed with ½ tablespoon all purpose flour

Icing:
¾ cup (105g) confectioners’ sugar
juice of 1 orange
water, if necessary

Adjust a rack to the bottom third of the oven; preheat the oven to 180°C/350°F. Have ready a 25cm (10in) straight-sided metal tube pan, ungreased*.
Whisk together the cake flour and confectioners’ sugar in a bowl, then sift the mixture three times.
In the clean bowl of an electric mixer fitted with the whisk attachment, whisk egg whites and salt on medium speed until foamy. Add the cream of tartar and whip on high speed. Gradually add the granulated sugar in a steady stream. On high, whip until firm (not stiff) peaks form. Reduce the mixer to low speed, add the vanilla and orange zest and mix until incorporated.
Sift 1/3 of the flour mixture over the whites and gently fold. Do the same with the remaining mixture in 2 additions, adding the cacao nibs with the last one. Pour the batter into the prepared pan, place it on a baking sheet and bake for about 40 minutes or until the top is golden and a skewer inserted in the center of the cake comes out clean. Invert the pan onto a wire rack and cool completely.
To remove the cake from the pan, loosen the sides of the cake with a thin, long knife or spatula. Invert onto a plate.
Glaze: sift the icing sugar into a bowl and gradually add the orange juice, mixing until desired consistency. Add the water if necessary. Pour over the cooled cake.

* I used a nonstick pan because that’s the one I have; the cake tasted delicious and had a very light, feathery texture

Serves 8-10