Having worked in the Yarra Valley and spent plenty of time driving around it, I'm amazed at how geographically large and diverse it is. Mac Forbes has been one of the most important wine producers that has attempted to show how different each part of the region can be. He does this through the medium of grape variety, having released a number of sub-regional wines every vintage since 2004. I was thrilled to sit down with him and hear more about his journey and what led him to take such a serious risk in choosing this approach.