Quintessa is a single 75-hectare estate, belonging to the Franciscan Group, which lies in the heart of Rutherford. The estate includes a valley, a lake, a river and 5 hills with 5 distinct soil types. It is unique in the sheer diversity it encompasses. Valerie Huneeus, a scientist and viticulturist, has developed the vineyards from the ground up, utilising the latest vineyard technology.

Quintessa is an American Bordeaux blend or "meritage" comprising Cabernet Sauvignon (60%), Merlot (30%), and Cabernet Franc (10%). It is aged in small French barrels (75% new) for 18 months. The inaugural vintage was 1996 and already Quintessa is being talked of as a Californian classic.