While Californian winemakers increasingly craft wines in more "Old World" or European wine styles, most Californian wines (along with Australia, New Zealand, Chile and Argentina) favor simpler, more fruit dominant New World wines. The reliably warm weather allows many wineries to use very ripe fruit which brings up a more fruit forward rather than earthy or mineralic style of wine. It also creates the opportunity for higher alcohol levels with many Californian wines having over 13.5%. The style of Californian Chardonnay differs greatly from wines like Chablis with Californian winemakers frequently using malolactic fermentation and oak aging to make buttery, full bodied wines. Californian Sauvignon blancs are not as herbaceous as wines from the Loire Valley or New Zealand but do have racy acidity and fresh, floral notes. Some Sauvignon blanc are given time in oak which can dramatically change the profile of the wine. Robert Mondavi first pioneered this style as a Fume blanc which other Californian winemakers have adopted. However, that style is not strictly defined to mean an oak wine.