The vast region of South Australia is home to a wide variety of vineyards, growing a large range of different grape varietals. Because the South Australian wine region is so large, it benefits from a great array of climatic conditions – from dry and hot, to cool and windy – which wineries can use to their advantage when it comes to selecting the grape varietal they wish to thrive in a particular sub-region. South Australia is most commonly associated with the big, powerful and fruit-forward Shiraz wines which are produced in the cooler valley areas of the region, but recent decades have seen something of an explosion in the South Australian wine industry, leading to wineries expanding their repertoire enormously and experimenting with other fine grape varietals and making the most of their unique terroir. Although primarily associated with the Rhone region of France, the precise origins of the Viognier grape variety are unknown, and the subject of much debate. However, these fine and delicate green skinned grapes are an important varietal for many of France's most elegant white wines, and they are quickly beginning to spread around the New World, too, where wineries are discovering their unique qualities and unusual character. Viognier grapes are notoriously difficult to grow, due to the fact they are highly susceptible to mildew, but wineries persevere with them nonetheless, producing wines which are highly aromatic and have a great, fruit-forward character. Their delicate aroma suggests sweetness due to its flowery, sappy nature, but the wine itself generally very dry and crisp, and full of summery, light and refined qualities.