I don't have the money to buy Rose Levy Beranbaum's Bread Bible, but I checked a copy out of the library and set out on my first loaf of challah. (If I close the book up tight, perhaps the pages will flatten out again and the library won't notice the flour smudges.) I had been invited to a friend's house for Shabbos and thought it would be nice to take challah.
I spent a day on it; the friend came down ill; I how have sole possession of a loaf of challah that looks wonderful but is too dry for my taste. I can make French toast out of it, so it's not a loss but ... that was a lot of work for a disappointing result.
This was the traditional challah, without any dairy. Perhaps if I made brioche (as Rose suggests as an alternative to the traditional loaf) I'd like it better.
Bread pudding is a good idea!
Thanks for the link to the newer recipe. I see I'll have to try again. I hope that the "old starter" I'm supposed to use is my sourdough starter. However, it's fairly sour. I started it with a package of dried starter from a gourmet store, a package of San Francisco sourdough. I'll have to see how that puckery sour affects the challah.
(I had made an attempt to start my own sourdough, which produced something that just didn't smell right, so I tossed it. There are umpteen zillion threads here by people trying to make their own starter, and I get the feeling that it's not as easy as the books make it sound. I've never had any sort of struggle with my purchased starter.)
I've had great results with this recipe:
http://www.williams.edu/astronomy/kkwitter/challah.html