The thirtieth Bread Baker's Apprentice challenge (from the book by the same name authored by Peter Reinhart) is Basic Sourdough Bread, and is found on pages 233-235.
The dough recipe made two 1-1/2 pound loaves. Matt ate most all of it...one one day and the other another day. I think I had one slice and Mark had a couple, but Matt really loved this bread. So much so, that I made another two loaves at the end of the week as Margaret was baking them and I decided to just join in since I knew Matt would love to see more of this bread. Delicious. Really really good.