Ingredients for the cake:
• ½ cup
(1 stick) unsalted butter, plus extra for greasing pan
• 1¾ cups plus 2 tablespoons unbleached all-purpose flour,
plus extra for flouring the pan
• 3 ounces unsweetened chocolate
• 1 teaspoon vanilla extract
• 2 cups sugar
• 2 eggs, separated
• 1 teaspoon baking soda
• ½ cup sour cream
• 1 teaspoon baking powder
Ingredients for the frosting:
• 2 tablespoons unsalted butter
• ¾ cup semisweet chocolate chips
• 6 tablespoons heavy cream
• 1 cup sifted Confectioners' sugar
• 1 teaspoon vanilla extract
Directions:
1. Preheat the oven to 350°F. Butter and flour a 10-inch tube
pan.
2. Cut the chocolate and butter into small pieces and place in
a large bowl. Pour one cup boiling water over them; let stand
until melted. Stir in the vanilla and sugar, then whisk in the
egg yolks, one at a time.
3. In a small bowl, mix the baking soda and sour cream and
whisk into the chocolate mixture. Sift the flour and baking
powder and add to the batter, mixing thoroughly.
4. Beat the egg whites until stiff but not too dry. Stir a
quarter of the egg whites thoroughly into the batter. Gently
fold in the remaining whites.
5. Pour the batter into the prepared pan. Set on the center
rack of the oven and bake until a cake tester inserted into
the center comes out clean, 40 to 50 minutes. Cool in the pan
for 10 minutes, unmold and cool completely before frosting. |
