New Book Tells Us How To Eat Our Christmas Trees This takes going green to a whole new level. According to Smithsonian Magazine, we really can eat our natural Christmas Trees. OK, it wouldn't make much of a main course, but if you haven't thrown yours out yet, this may just get you to thinking about maximizing your use of these holiday centerpieces. U.K. based Julia Georgallis published a book called How To Eat Your Christmas Tree last October. It's available on Amazon for $14.99 in hardcover or $6.99 on your Kindle device. In the book Julia, an artisan baker and cook, discusses different ways to use our trees after December 25th.