The grapes to produce “Altazor” Maipo Alto Undurraga were manually selected; first by cluster, then by berry to ensure only the ripe, healthy fruit was vinified. The “Altazor” Maipo Alto Undurraga grapes were then transferred by gravity into small stainless steel tanks of 10,000 litres for fermentation with selected yeasts. The wine was made without any additions and following fermentation it was transferred to French oak barrels where it spent 16 months. It received a further 18 months’ ageing in bottle prior to release.
The grapes for this wine were carefully selected from small plots. The Cabernet Sauvignon comes from estate vineyards planted in the early 1990s, in Pirque and Los Morros, in Alto Maipo. The Pirque vineyard contains alluvial soils with medium composition with a high level of stone content, whereas Los Morros consists of soils of colluvial-alluvial origin. Both soil types have medium to low fertility, good depth of 1.5 to 2 metres and good drainage; ideal conditions to produce wines of character. The Carménère grapes come from an estate vineyard in the Colchagua Valley planted in the mid 1980s. The clay loam soil textures are dominant which is ideal for this variety as they retain soil moisture ensuring optimum and prolonged ripening. The Carignan grapes come from a rain-fed vineyard planted in 1958, in the Maule Valley. It contains soils with clay texture, high quartz content, subsoil of granitic origin and good drainage.
Undurraga is one of Chile’s most prestigious wineries, consistently receiving high scores from top wine critics. Founded in 1885, Undurraga owns 1,350 hectares of estate vineyard in Chile’s premium wine producing areas such as Leyda, Cauquenes and Itata. Head winemaker Rafael Urrejola has spent a great deal of time understanding the diversity of Chile’s vineyard sites; the result is the emblematic ‘Terroir Hunter’ range. Undurraga cultivates their vineyards with respect for the environment and follow a philosophy of minimal intervention in the cellar in order to showcase the terroir.