Quintessa is a 280-acre estate in Rutherford, in Napa Valley. It was founded in 1990 by Valeria and Agustin Huneeus, who had both had extensive experience in wine production and vineyard management. Agustin was chief executive officer of the Chilean producer Concha y Toro in the 1960s. He later held top positions at Seagram’s and Franciscan Estates. Valeria, a microbiologist by training, worked early in her career as a viticulturalist in South America. Quintessa makes just one wine, its flagship blend of Cabernet Sauvignon, Merlot, Petit Verdot, Cabernet Franc and Carmenere, depending on the vintage.