I made this to take to our friends' house for 4th of July. It is from the book The Lee Bros. Southern Cookbook. It is so good that when I gave Scott a tiny piece to try he actually got back up to try more. He also called me a genius which was pretty funny. I think what is so good is the flavor from the buttermilk and the nice texture from the brown sugar. It really has a great, tangy, unique flavor.