The definition of a craft brewer is open to interpretation. For some, it is any brewer that is not one of the big industrial brewers like Anheuser-Busch, Miller, or Coors. For others, it is limited to those artisanal brewers who work with natural ingredients, in small batches, and with no automation. Beer Advocate defines a craft brewer as One whose primary focus is brewing craft beer, as defined. It is then important to have a definition of craft beer. Beer Advocate's definition is Beer brewed in limited quantities often using traditional methods. There is still plenty of room for interpretation.