Mendoza 4 products.

The province of Mendoza, at the foot of the Andes at an average altitude of 900 metres, concentrates 70% of Argentine production and virtually all of the country's leading wineries. The climate is continental desert, with more than 300 days of sunshine per year and rainfall below 300 mm, making irrigation from Andean snowmelt channels a historical necessity. Soils are alluvial, with layers of sand, gravel and clay in proportions that vary depending on proximity to the mountain range.

The most important sub-zones are Luján de Cuyo (average altitude 1,000 m, clay-sandy soils, historical benchmark for quality Malbec) and the Valle de Uco (altitude 1,000–1,500 m, very cold nights, stony soils, the area of greatest current potential for fresh-style reds and for Chardonnay and Semillón whites). Vineyards above 1,400 metres in Gualtallary and Los Chacayes produce the highest-acidity, lowest-alcohol Malbecs in Argentina.