Chocolate Doughnuts

Ingredients

• • 2 1/4 cups (560 ml) unbleached all-purpose flour
  • 1/3 cup (75 ml) cocoa powder, sifted
  • 1 teaspoon (5 ml) baking powder
  • 1 teaspoon (5 ml) baking soda
  • 1/2 teaspoon (2.5 ml) salt
  • 3/4 cup (180 ml) brown sugar
  • 3 tablespoons (45 ml) unsalted butter, softened
  • 1 egg 

  • 1 egg yolk
  • 1/2 cup (125 ml) buttermilk
  • Icing sugar, for dusting