I've made this chocolate buttermilk pound cake several times lately. This cake started as a way to use up buttermilk that I had purchased for pancakes but it has taken on a life of its own. I started with this recipe from Allrecipes and added three tablespoons of cocoa. It doesn't need any icing to be enjoyed. Like all pound cakes, it is very portable---it makes the perfect snack for a car trip. The sour note of the buttermilk goes amazingly well with the bitter note of the cocoa. Don't worry, this cake has plenty of sugar, butter, and eggs to smooth things out.