Lost-and-Found Lemon Pound Cake

Serves 16 to 20. Excerpted from “A Real Southern Cook,” © 2015 by Dora Charles. Reproduced by permission of Houghton Mifflin Harcourt. All rights reserved.

1 pound good creamy butter (I used Kerrygold), softened

1 (1-pound) box confectioners’ sugar

1 cup sour cream

2 tablespoons pure vanilla extract

1 tablespoon pure lemon extract (optional)

3 cups cake flour (Swan’s Down recommended)

½ teaspoon baking soda

8 large eggs, separated while cold, then brought to room temperature

Confectioners’ sugar, for dusting

1. Set the oven to 325 F. Spray a heavy 10-inch Bundt pan well with baking spray.

2. In a large bowl, with an electric mixer on medium speed, cream the butter until light and fluffy. Slowly add the confectioners’ sugar and beat for several minutes, until the mixture is satiny. Add the sour cream, vanilla, and lemon extract, if using, and mix well.

3. Sift the flour and baking soda three times. Add 1 cup of the flour mixture to the butter and mix in well. Then mix in half the egg yolks. Mix in another cup of flour and the remaining yolks. Add the rest of the flour. Don’t over mix, or the cake will be tough. Scrape down the sides of the bowl and the beaters and do the final mixing by hand.

4. In a large bowl, with clean beaters, beat the egg whites to stiff peaks. Gently add the whites to the batter, folding them in with a wooden spoon or a rubber spatula — just barely mix everything together.

5. Scrape the batter evenly into the Bundt pan, rotating the pan as you go and twisting it to level the batter. Rap the pan sharply on the countertop about 30 times, rotating the pan slightly each time, to eliminate any air pockets.

6. Bake for 30 minutes. If the cake is getting too brown on top, turn the oven down to 300 F, then test again in 15 minutes. The cake is done when the top springs back when lightly touched and a toothpick inserted into the center comes out clean, about 45 minutes to 1 hour in all.

7. Cool on a rack for 15 minutes, then run a knife around the rim and center tube and invert the cake onto the rack to cool completely.

8. Transfer the cake to a serving plate or a cake stand. Dust with confectioners’ sugar.

9. The cake will keep for at least a week at room temperature if it’s well wrapped; it also freezes well.

TIP: If you don’t have lemon extract, you can use 1 tablespoon fresh lemon juice plus the grated zest of the lemon.