sourdough chocolate cake.
Oh, the hyperbole! I'm certain that is not really true... so don't quote me.
However, this is an amazingly chocolaty cake (just look at the color!) and not too sweet and loads easier to make than sourdough cake. So, thank you Epicurious and Gourmet and Smitten Kitchen for all your good ideas and recipes. It's been fun, but I am done looking for the ultimate chocolate cake at last. Recipe here.