Bolo Polana

Ingredients

• medium-sized boiling potatoes (about 1 pound)

  peeled and quartered
  3 unit
• + 3 x ¼-pound sticks unsalted butter

  softened
  2 tablespoons
• flour
  2 tablespoons
• sugar
  2 cups
• roasted unsalted cashews

  finely chopped or pulverized in a blender or with a nut grinder
  2 cups
• finely grated fresh lemon peel
  2 teaspoons
• finely grated fresh orange peel
  2 teaspoons
• egg yolks
  9 unit
• egg whites
  4 unit