(Gizmodo) - Wine is spoiled grape juice. It’s old squished grapes mixed with yeast that get you drunk. But lots of people have a lot of things to say about wine, and maybe you’ve wondered what it is that gets them so jazzed over rotten grapes. Well, a lot of their enjoyment comes from biology, chemistry and psychology, as well as the kinds of molecules that travel from the glass into your body.

Bianca Bosker knew little about wine when she started writing her new book Cork Dork, which came out on March 28th. Bosker followed sommeliers, scientists and wine lovers on an olfactory quest to understand why some people get so excited over wine, and whether all the fancy wine-words you hear at restaurants have any real meaning.