The title makes it sound somewhat more specific than it is - it is also about food at funeral and mourning related events rather than just funerals - so it includes things like wakes, 'funeral receptions' and various other forms of remembrance.

Edit: although that does make me wonder if the idea of strictly-at-the-actual-funeral funeral food has been sufficiently explored. e.g. dancing pallbearers with coffin but the top of the coffin is also a sushi boat and/or salad bar.