Ingredients

  • 8 ounces cake flour 2 cups
  • 1 1/2 cups sugar divided
  • 2 3/4 teaspoons baking powder
  • 3/4 teaspoon salt
  • 7 large eggs separated, plus 2 large egg whites
  • 4 tablespoons vegetable oil such as canola, light olive oil
  • 4 tablespoons hazelnut oil or walnut oil, grape seed oil, or you can still use canola or light olive oil
  • 3/4 cup orange juice
  • 1 1/4 teaspoons vanilla extract
  • 1 1/2 tablespoons orange zest freshly grated
  • 23 cup hazelnuts (filberts) chopped
  • 1 teaspoon cream of tartar

Method

  • Preheat oven to 325F (160C).
  • Sift together cake flour, 1 1/4 cups sugar, baking powder and salt into large bowl.
  • Whisk dry ingredients until mix well.
  • In small bowl, beat egg yolks.
  • Add egg yolks, vegetable oils, orange juice, vanilla and orange zest into dry ingredients.
  • Stir mixture until wel combined and smooth.
  • Fold in chopped hazelnuts.
  • In bowl of stand mixer, beat egg whites and cream of tartar until foamy.
  • With mixer running, slowly pour in remaining 1/4 cup sugar.
  • Keep beating whites until stiff peaks form when beater is lifted.
  • Fold beaten whites into rest of batter:
  • Gently spoon 13 beaten egg whites into large bowl with batter.
  • Slowly and carefully fold whites into batter with a rubber spatula until combined.
  • Add another 13 beaten whites to bowl and gently fold into batter.
  • Gently fold in the remaining third of the whites.
  • Be gentle, and do not deflate the egg whites.
  • Spoon batter with rubber spatula into 10-inch ungreased angel food cake pan.
  • Place pan in oven and bake until cake is puffed (it should rise over top of the pan by 2 to 3 inches but will deflate a little as it cools), lightly browned on top, and wooden stick inserted comes out clean, 60 to 75 minutes.
  • Invert pan over wine or soda bottle.
  • Set pan aside in a safe and draft-free place to let it cool completely.
  • Loosen sides with thin knife or metal spatula and tap it gently to remove cake.
  • Serve.
  • Note: Slice cake, put into a zip-lock bag, and it can be frozen up to 2 months.