Chardonnay is a green-skinned grape variety used to make white wine. It is believed to have originated in the Burgundy wine region of eastern France but is now grown wherever wine is produced, from England to New Zealand. For new and developing wine regions, growing Chardonnay is seen as a "rite of passage" and an easy segue into the international wine market. J. Robinson Jancis Robinson's Wine Course Third Edition pg 101-106 Abbeville Press 2003 ISBN 0789208830

The Chardonnay grape itself is very neutral, with many of the flavors commonly associated with the grape being derived from such influences as terroir and oak. J. Robinson (ed) "The Oxford Companion to Wine" Third Edition pg 154-156 Oxford University Press 2006 ISBN 0198609906 It is vinified in many different styles, from the elegant, "flinty" wines of Chablis to rich, buttery Meursaults and New World wines with tropical fruit flavors.

Chardonnay is an important component of many sparkling wines around the world, including Champagne. A peak in popularity in the late 1980s gave way to a backlash among those wine drinkers who saw the grape as a leading negative component of the globalization of wine. Nonetheless, it remains one of the most widely-planted grape varieties, with over 400,000 acres (175,000 hectares) worldwide, second only to Airén among white wine grapes and planted in more wine regions than any other grape – including Cabernet Sauvignon.

History

Modern DNA fingerprinting research at University of California, Davis, now suggests that Chardonnay is the result of a cross between the Pinot and Gouais Blanc (Heunisch) grape varieties. It is believed that the Romans brought Gouais Blanc from the Balkans, where it was widely cultivated by peasants in Eastern France. The Pinot of the French aristocracy grew in close proximity to the Gouais Blanc, giving both grapes ample opportunity to interbreed. Since the two parents were genetically distant, many of the crosses showed hybrid vigour and were selected for further propagation. These "successful" crosses included Chardonnay and siblings such as Aligoté, Aubin Vert, Auxerrois, Bachet noir, Beaunoir, Franc Noir de la-Haute-Saône, Gamay Blanc Gloriod, Gamay noir, Melon, Knipperlé, Peurion, Roublot, Sacy Oz Clarke Encyclopedia of Grapes pg 112 Harcourt Books 2001 ISBN 0151007144 and Dameron.

Clones, crossing and mutations

As of 2006, 34 clonal varieties of Chardonnay could be found in vineyards throughout France, most of which were developed at the University of Burgundy in Dijon. The so-called "Dijon clones" are bred for their adaptive attributes, with vineyard owners planting the clonal variety best suited to their terroir and which will produce the type of characteristics that they are seeking in the wine. Examples include the lower-yielding clones Dijon-76, 95 & 96 that produce more flavor-concentrated clusters. Dijon-77 & 809 produce more aromatic wines with a "grapey" perfume, while Dijon-75, 78, 121, 124, 125 & 277 are more vigorous and higher yielding clones. New World varieties include the Mendoza clone, which produced some of the early Californian Chardonnays. The Mendoza clone is prone to developed millerandage, also known as "hens and chicks", where the berries develop unevenly. In places such as Oregon, the use of newer Dijon clones has had some success in those regions of the Willamette Valley with climates similar to that of Burgundy.