Chocolate Candy Cane Cake Ingredients Cake 1 1/2 cups all-purpose flour 1 teaspoon baking soda 1/2 teaspoon baking powder 1/4 teaspoon salt 4 oz unsweetened chocolate, finely chopped 1/2 cup Dutch-processed cocoa powder 1 teaspoon instant espresso powder 1 1/4 cups boiling water 10 tablespoons (1 1/4 sticks) unsalted butter, at room temperature 1