HI everyone. I'm so sorry for posting and then dropping off of the face of the earth. We've had birthdays, a vacation and a case of the martian death flu! Anyway, here's my recipe if anyone's still interested. 9 oz sifted cake flour 2 teaspoons baking powder 1/2 teaspoon salt 8 oz unsalted butter, room temperature 14 oz sugar 4 large egg yolks 2 teaspoons vanilla 1 cup sour cream 4 large egg whites Preheat the oven to 350 degrees Fahrenheit. Prepare your pans. Sift together the flour, baking powder, and salt. Set aside. Cream the butter in a large bowl with an electric mixer until fluffy and light in color. Add the sugar and continue to mix until fluffy and light. This step takes about 5 minutes. Add the egg yolks, one at a time, being sure each is well incorporated before adding the next one. Add the vanilla. Reduce the mixer speed to low and add the dry ingredients alternately with the sour cream, beginning and ending with the flour. Be sure the mixture is completely blended after each addition. Scrape the sides of the bowl, and beat for 1 minute. In a separate bowl, with clean beaters, beat the egg whites to soft peaks. Gently fold the whipped egg whites into the batter with a rubber spatula. Pour the batter into the prepared pans and smooth with a rubber spatula. Bake in the preheated oven. The top of the cake should be nicely browned. Test for doneness with a skewer or a toothpick. The tester should come out dry. An 8 in round takes about 45 minutes, I rarely use a timer so this is my best guess.