I married into a publishing family. My father-in-law was a publisher, his first wife edited the Nebraska Centennial Cookbook. My wife co-authored a book on using the web for teaching, my brother-in-law has published several books on Nebraska history and my sister-in-law published a book on gardening.
Putting a book together is a LOT of work, and my wife's book didn't have the pictures that a cookbook requires these days. (I think Peter Reinhart's new pan pizza book has more pages of pictures than of text.)
For now I'll pass on doing a cookbook. (However, I've been developing character sketches and an outline for a novel for the past year, it stems from a recurring dream I've been having.)