American wine average 28.2 percent in 2010, versus 27 percent in 2009. "As of 2005", the largest producers of American wine. American wine American wine has been produced for over 300 years. Today, wine production is undertaken in all fifty states, with California producing 89 percent of all US wine. The United States is the fourth-largest wine producing country in the world, after France, Italy, and Spain. The North American continent is home to several native species of grape, including "Vitis labrusca", "Vitis riparia", "Vitis rotundifolia", and "Vitis vulpina." But the wine-making industry is based on the cultivation of the European "Vitis
Soave (wine) bianco, Chardonnay and Trebbiano di Soave are allowed to fill up to 30% of the remaining blend, with Trebbiano Toscano and other local white grape varieties (such as Friulano, Cortese, Riesling Italico, Vespaiolo and Serprina) permitted up to 5% collectively. Grapes are harvested to a more restricted maximum yield of 10 tonnes/ha while the finished DOCG wines must reach a minimum alcohol level of 11.5%. While most Soave Superiore DOCG is produced from vineyards within the classico zone, the boundaries for the DOCG also extend to some of the hillside vineyards that are outside the classico zone. These wines are