The Barossa Valley in Australia is one of the New World's most interesting wine regions, having been established in the late 19th century by German settlers. The region benefits enormously from the relatively temperate climate, which ranges from being hot on the lower parts of the valley, to quite cool as the altitude increases on the valley slopes. Barossa Valley produces mostly Shiraz wines, and has become one of the key Australian regions for this distinctive grape varietal which has gone on to be a major grape for the Australian wine industry. Despite suffering from a poor reputation in the mid 20th century, by the 1980s, plenty of unique and forward-thinking wineries set up in Barossa to take advantage of its excellent climate, and set about producing the excellent red and white wines which the region is famed for today. Of all the white wine grape varietals, surely the one which has spread the furthest and is most widely appreciated is the Chardonnay. This green skinned grape is now grown all over the Old and New Worlds, from New Zealand to the Americas, from England to Chile, and is one of the first varietals people think of when considering white wine grapes. Perhaps this is because of its huge popularity which reached a peak in the 1990s, thanks to new technologies combining with traditional methods to bring the very best features out of the Chardonnay grape, and allow its unique qualities to shine through. Most fine Chardonnay wines use a process known as malolactic fermentation, wherein the malic acids in the grape juice are converted to lactic acids, allowing a creamier, buttery nature to come forward in the wine. No grape varietal is better suited to this process than Chardonnay, which manages to balance these silky, creamy notes with fresh white fruit flavors beautifully.