Louisa Rose, head of winemaking at Yalumba, where she has worked since graduating as dux from Roseworthy in 1992 Mention the name Louisa Rose in any wine circle and the grape variety Viognier won’t be far behind. Yalumba, where she is chief winemaker and has worked since graduating from Roseworthy in 1993, was the first to plant Viognier commercially in Australia back in 1980, but it was Louisa who put Australian Viognier on the global wine map and established Yalumba as a wo