While you can't judge a book by its cover, the quality of this cover is a hint of the quality within. I'm a book lover, so I appreciate the little details. Though this is described as a paperback, the "paper" is sturdy and will wear well, important for a recipe book. I also love that the cover is hinge scored near the spine. Such a score allows you to fold back the cover and open pages in a way that saves the binding and keeps the pages in the book.
Now on to the inside. The authors have put a lot of time into this book, making it more than just a collection of smoothie recipes. There is a discussion of their story, the health benefits of daily green smoothies, suggested blenders, and so much more. Even the sidebars contain practical goodies: how to clean your blender, the difference between blending and juicing, how to make smoothie "ice" cubes to save time and money and improve the quality of the smoothie...
The recipes are accompanied by beautiful photos. (Kudos to the photographer.) They are also broken down into categories, such as "Energy Boosting," "Fitness Fuel," and even "Delicious Desserts." Once they have gotten you started with basic smoothie recipes, they give suggestions on how to vary the recipe by adding a few extras--and they give the benefits of each of these additions. A big plus is the index at the end, which allows you to find smoothie recipes by looking up a particular ingredient, useful when you have berries to use up or when you find there is a great sale on kiwi that week. One thing I found interesting is that there is no dairy in any of the recipes, surprising to me since all of my smoothies in the past contained milk or yogurt or both. You also won't find any "animal-based products, processed sugars, and gluten."
On top of all this, the book is just well written, easy to understand and easy to read. As an editor and a reader I rejoice that the authors put in the time and effort to make this a great book inside and out.