Sarabeth's Bakery: From My Hands to Yours
1 1/2 cups whole milk
1 tablespoon fresh lemon juice
2 1/3 cups unbleached all-purpose flour
1 cup Dutch-processed cocoa powder
1 1/2 teaspoons baking soda
1/2 teaspoon fine sea salt
1/2 ounce (1/2 square) unsweetened chocolate, finely chopped
10 tablespoons (1 1/4 sticks) unsalted butter, chilled and cut into 1/2-inch cubes
1 3/4 cups superfine sugar
1 teaspoon pure vanilla extract
3 large eggs, at room temperature, beaten
Confectioners' sugar, for garnish, optional
1. Position a rack in the center of the oven and preheat
to 350°F. Butter and flour the inside of a 8 to 10-cup fluted tube pan
and tap out the excess flour.
2. Combine the milk and lemon juice in a glass measuring
cup. Let stand in a warm place (near the preheating oven) while
preparing the rest of the batter; the milk will curdle. Sift the flour,
cocoa, baking soda, and salt together into a medium bowl.
3. Bring 1/2 inch of water to a simmer in a small
saucepan, and turn off the heat. Place the chocolate in a custard cup or
ramekin and set in the hot water. Let stand until the chocolate is
melted, then remove from the water, being careful not to splash any
water into the chocolate, and stir until smooth. Let stand until tepid.
4. Beat the butter in the bowl of a heavy-duty stand
mixer fitted with the paddle attachment on
medium-high speed until smooth, about 1 minute. Gradually beat in the
sugar, then add the vanilla. Beat until the mixture is very light in
color and texture, scraping occasionally, about 4 minutes. Gradually
beat in the eggs. Reduce the mixer speed to low. Beat in the cooled
chocolate. In thirds, alternating with two equal additions of the milk
mixture, add the flour mixture, scraping down the bowl and beating until
smooth after each addition. Spoon the batter into the pan and smooth
the top with a spatula.
5. Bake until the top of the cake springs back when gently pressed with your finger, and a cake
tester inserted into the center of the cake comes out clean, about 1 hour. Cool on a wire rack for
10 minutes. Invert and unmold the cake onto the rack and cool completely. Sift a light coating of
confectioners’ sugar on top, if using. (The cake can be stored at room temperature, wrapped in plastic wrap, for up to 2 days.)