Hi, is it possible that a book can be a doorstopper in this sentence? Doorstopper is something you put under or against a door to keep it open. Is it a metaphor?

"That's what the promotional blurb on his new book,
A Day at elBulli: An Insight into the Ideas, Methods and Creativity of Ferran Adrià, says anyway.
Part diary, part travelogue
and part cookbook, the three-kilogram
doorstopper is a feast for the eyes. "
Thank you for your help.