So cookbooks are a common category, bigger than a millihelen but smaller than a Oprah. Pratchett can sell an oversized hardback illustrated with knackneed flappy-breasted old guys in scanty loincloths, and I can't think of another one of those. New unit of publishing force, right up there with the complete edited letters and notes, Tolkien, q.v.
Other than that it's an okay Discworld novel, a quick orchestral reprise of Interesting Times.
ISBN: 0-06-104096-7
So wrote clew in
SF&F.