Andalucia is primarily divided into 3 areas based on each area's distinct climates. The west coast is cooler and includes the Sherry-producing areas of Jerez and Sanlúcar de Barrameda. The Mediterranean climate in the south around Málaga and Sierras de Málaga; and the hot and dry conditions around the Montilla-Moriles are best suited to production of Andalucía's signature heavy dessert wines, made from Pedro Ximénez and Moscatel (Muscat) grapes. The southwest coast's lower average temperatures are vital for preserving all-important acidity in Palomino grapes for the production of the Fino and Manzanilla styles of Sherry. The Airen grape is grown in the northern parts of Andalucía and is primarily used in brandy and blends. Some local growers, in the warmer parts of the region, are experimenting with poplar varieties such as Cabernet Sauvignon, Merlot and Petit Verdot.