El Esteco produces wines from Salta, Argentina's high-altitude wine region in the northwest. The winery works with Malbec, Cabernet Sauvignon, and Torrontés—varieties that thrive in Salta's cool mountain climate and intense sunlight. Partida Limitada Malbec, the flagship expression, showcases the depth and structure Malbec achieves at elevation. Chañar Punco blends Cabernet Sauvignon with Malbec, marrying the two grapes' complementary tannin profiles. Old Vines Torrontés taps into mature plantings of this white variety, known for its aromatic intensity and mineral character. The winery's releases have been assessed by Wine Advocate, Wine Spectator, Decanter, Wine Enthusiast, and Falstaff.