This recipe comes from a Texas cookbook called "Texas Blossoms". I did make a few changes. I don't have 3-8" round pans so I baked mine in 2-9" round pans for 40 minutes. Also, I have an aversion to eating raw egg yolks so I substituted 3 Tbsp Heavy Cream in the icing. I used a 2 pound bag of powdered sugar - it's just a little over 6 cups so you don't have to bother with measuring it out. If the icing seems a little too thick simply add another egg yolk or a tablespoon of milk or heavy cream to thin. The icing makes a very generous amount so if you are only using 2 - 9" layers you have enough for a nice thick layer of icing between the cake layers. This is a very tender cake with a wonderful mocha flavor.