Glows in the dark!
The challenge was to design a book for a bar that can’t be shown or seen; we do not even say where it is.
We had to generate a design that would not openly reveal that the book was about that bar.
The solution was to make a cover that shines in the dark. And that reveals the book that is hidden: the Book of Secrets of a bar full of secrets.
Recipes, ingredients and history of the drinks and the bar itself can be found in this book, although nowhere is the address. Like the book itself, only those who know how to search find it.