De Martino operates in the Maipo Valley, a region within Chile's Central Valley known for structured red wines and the expression of cool-climate fruit. The winery's portfolio centers on Pinot Noir and Cabernet Sauvignon, with the Legado Pinot Noir Reserva and Cuvée Gran Vino representing flagship expressions of these varieties. Both wines have been assessed by major critics including Wine Enthusiast, Wine Advocate, Wine Spectator, Decanter, and Falstaff. The winery also produces Viejas Tinajas Muscat, a fortified expression that rounds out its range. Maipo Valley's terroir—marked by alluvial soils and diurnal temperature swings—supports the development of ripe, well-defined flavors in both dark-skinned and aromatic varieties. De Martino's work across these grapes reflects the region's capacity for precision and depth.