Catena Zapata is based in Agrelo, in the Mendoza region of Argentina. The producer specializes in red wines, drawing from vineyard sites in both the Agrelo and Tupungato appellations, two of Mendoza's most recognized areas for quality viticulture.

Mendoza's high-altitude vineyards benefit from significant diurnal temperature variation, which allows grapes to develop concentration while maintaining freshness and acidity. The region's terroir is particularly well-suited to Malbec, which has become Argentina's signature variety. Catena Zapata's current range focuses on this strength, with offerings that span different quality tiers and vineyard designations.

The producer's lineup centers on Malbec across multiple expressions, including bottlings under the Argentino and Catena Alta labels. Reserve selections, such as the Estiba Reservada from Agrelo, incorporate Cabernet Franc, Cabernet Sauvignon, and Petit Verdot alongside Malbec, reflecting the broader portfolio of Bordeaux varieties cultivated in the region.

Agrelo is a small appellation within Mendoza, Argentina's principal wine region. Located in the eastern foothills of the Andes, the area is part of the broader Maipú district and sits at a moderate to high altitude—conditions that shape both the vine physiology and the character of wines produced there. The appellation's establishment reflects Argentina's evolving classification system, though Agrelo remains less widely documented than larger Mendoza subregions.

The terroir of Agrelo is defined by its elevation, which moderates temperatures and extends the growing season, allowing grapes to develop complexity while maintaining acidity. The region experiences the classic Mendoza continental climate with significant diurnal temperature variation between warm days and cool nights. Soils in the appellation are typically alluvial in origin, with varying sand and gravel composition that provides good drainage. Winemakers here work primarily with Bordeaux varieties—particularly Cabernet Sauvignon, Cabernet Franc, and Petit Verdot—which thrive in these conditions and form the backbone of local production.

Wines from Agrelo tend toward structure and depth, reflecting both the grape varieties and the altitude's influence on phenolic ripeness. The cooler nights help preserve freshness and complexity in the wines, while the intense daytime sun develops ripe fruit character. Cabernet-based blends from this appellation typically show a balance between power and elegance, with the elevation-driven acidity providing definition and aging potential.