The Doctor reading Neelix's book title
A holo-cookbook was a type of holographic novel. Like a traditional cookbook, the holographic host demonstrates to the user how to prepare a meal.
Neelix wrote a holo-cookbook called Cooking with Neelix, a Culinary Tour of the Delta Quadrant in 2378. That year, he asked for The Doctor's approval before he forwarded it to Broht & Forrester for consideration. (VOY: "Author, Author")