Yarra Yarra has had the ambition to join this elite group. Unfortunately, their vineyards and winery were destroyed in the Victorian bush fires. I am not sure where they are in the rebuilding process.
A couple of days ago, I drank their flagship wine, the 2001 Yarra Yarra. This is a Cabernet Sauvignon based blend. The wine is very elegant and has nice oak and fruit integration. The problem is that the fruit is not quite ripe. There are definitely herbal aspects in the wine. I don't find this attractive, but some people don't mind. Vintage variation is a problem for Cabernet in the Yarra Valley. This wine can be superb in good years, but 2001 is not one of them.