CIA sauerkraut and red onion sourdough bread?

Profile picture for user BurntMyFingers

In "The Making of a Chef" Michael Ruhlman describes a sourdough bread with sauerkraut and red onion that was so good the president of the Culinary Institute of America ate half a loaf a day. It was a regular feature in their bakery at the time (1996). Does anybody have a recipe?