in the Texas Hill Country and North Fork of Long Island AVAs. Cabernet Sauvignon is made in varietal and blended styles throughout the United States. Under the American system, varietal Cabernet Sauvignon can include up to 25% other grapes. South America Cabernet Sauvignon is grown in nearly every South American country, including Chile, Bolivia, Brazil, Peru and Uruguay. In Chile, the wines were historically limited by the excessively high yields commonplace throughout the country. As producers began to concentrate on limiting yields, regional differences that distinguished Chilean Cabernets began to emerge. For vineyard plantings along flat river valleys, the region's climate is the most important consideration; as plantings move to higher elevations and along hillsides, soil type is a more significant concern. The wines of the Aconcagua region are noted for their ripe fruit but closed, tight structure that needs some time in the bottle to develop. In the Maipo Valley, Cabernet Sauvignon wines are characterized by their pervasive blackcurrant fruit and an earthy, dusty note. In warmer regions, such as the Colchagua Province and around Curicó, the grapes ripen more fully; they produce wines with rich fruit flavours that can be perceived as sweet due to the ripeness of the fruit. The acidity levels of these wines will be lower, and the tannins will also be softer, making the wines more approachable at a younger age. Argentina In Argentina, Cabernet Sauvignon lags behind Malbec as the country's main red grape, but its numbers are growing. The varietal versions often have lighter fruit flavours and are meant to be consumed young. Premium examples are often blended with Malbec and produce full, tannic wines with leather and tobacco notes. In recent years, there have been increased plantings of Cabernet Sauvignon in the Uco Valley of the Mendoza Province; the wines coming from vineyards planted at higher altitudes garner some international attention. Australia In the 1970s, the Coonawarra region first brought international attention to Australian Cabernet Sauvignons with intense fruit flavours and subtle minty notes. The Margaret River region soon followed with tightly structured wines with pronounced black fruit notes. In the 1980s, Australia followed California's contemporary trend in producing lighter, more "food friendly" wines with alcohol levels around 11-12% percent; by the early 1990s, the styles changed again to focus on balance and riper fruit flavours. Today Cabernet Sauvignon is the second most widely planted red wine grape in Australia, following