Seña is a single-estate, single-wine operation in the Aconcagua Valley, founded in 1995 by Robert Mondavi and Eduardo Chadwick of Errazuriz. It was one of Chile's first icon wines and is benchmarked against the greatest wines of Bordeaux and the top Super Tuscans, often winning top spots in blind tastings.
The wine is a blend of Cabernet Sauvignon (typically 55 to 60 percent) with Carmenere, Merlot, Cabernet Franc and Petit Verdot. Its hillside vineyard extends to 42 hectares (104 acres) on a range of soils and is slightly cooler than those on the Aconcagua valley floor, with harvest usually taking place a fortnight later. Ravines between the plots are used to create habitats for flora and fauna. Farming has been biodynamic since the mid 2000s.