This cake starts with a box of white cake mix but is improved upon with additions of sugar, flour, sour cream and flavorings. It's often made for weddings because if its moistness and pure white interior. The frosting recipe will make a little more than you''ll need for this cake, but I always like to have extra just in case accidents happen pre-party. My mom used to say that spackle makes all carpenters equal. I tend to believe the same is true with bakers and frosting.