Bone broth was the first big food trend in 2015, and so far, it’s stuck. Though not everyone has replaced their morning coffee with chicken broth, the trend has appeared on restaurant menus, in health advice columns and has even inspired its own recipe books. An incredibly simple and primitive idea, serving bone broth dates back to mid-18th century France, where it was served at inns and known as a restoratif, inspiring the word ‘restaurant.’