I've added another post on our trip to the Barossa Valley. Click on the Archives for December (righthand side of the screen) to find Barossa - December 13. The post includes tasting notes for the following wineries
Dutschke Wines (winemaker)
Turkey Flat Vineyards
While you are there you might as well check out The Sauce! Where's The Sauce on December 11 and the first day of wine tasting described in Barossa - December 12.