I don't buy books to read on "Kindle" hardware. But I do download Kindle books to my PC. I like to read on a larger screen and manage books on my larger screen computer.
So far I have not downloaded Kindle COOKbooks, but I find and have heard that maps are not as good as one would wish on history books. Some history books I have downloaded have not even illustrations - I know because I have paper and kindle in the same book.
I notice that a book I am about to purchase, Mario Batali's Italian Grill, is on Kindle, downloadable/uploadable to my PC. There is a price difference, but that is not my concern with this particular book.
Just wondering how many people are buying Kindle-able cook books.