I guess the graphics showcased really work because I felt like ordering some food.
There's a wide range of graphics collected over a variety of medium. The design medium includes, signage, logos, menus, packaging, promotional items and stationery.
I'm not too sure if because of the variety, the book has spread itself too thin. Personally, I would have preferred that the author had grouped all the designs created under each food outlet. That way, at least, we can see how the designer work his/her way across the different packaging mediums.
The variety in the book might make up for the lack of depth.
Overall, it's still a recommended book for any graphic or packaging designer.