Chocolate Layer Cake with Orange Mascarpone | culture: the word on cheese

Ingredients

• ¾ cup unsweetened cocoa powder (plus a pinch for dusting the pans)
• 2 cups cake flour (not self-rising)
• 1½ teaspoons baking soda
• ½ teaspoon salt
• ½ cup buttermilk
• ½ cup water
• ¾ cup unsalted butter (softened)
• 1¾ cups sugar
• 2 large eggs
• 2 teaspoons vanilla extract
• 2 cups mascarpone
• ¼ cup frozen orange juice concentrate
• defrosted
• 2 tablespoons grated orange zest
• 6 ounces bittersweet chocolate
• ½ cup heavy cream
• 1 tablespoon butter
• Candied orange peel (see Note)