Ingredients

• 1 cup unsalted butter, melted
• 1 1/2 cups sugar
• 1 orange, zest of, finely minced
• 1/2 teaspoon orange oil or 1 teaspoon orange extract
• 3 eggs
• 2 egg yolks
• 1/4 teaspoon cinnamon
• 1 1/2 teaspoons nutmeg
• 1/4 teaspoon mace
• 1/4 teaspoon salt
• 1/4 teaspoon baking soda
• 2 1/2 teaspoons baking powder
• 1/4 cup heavy cream or 1/4 cup evaporated milk
• 4 cups all-purpose flour
• egg yolks or egg, to glaze
• nutmeg or granulated sugar, for dusting
• 4 ounces white chocolate, melted, for coating biscotti
• 1 tablespoon pure vanilla extract