From the legendary 1840, Fonseca's first Vintage Port release, to the superb declared vintages of the last decade, the house has produced a succession of highly acclaimed wines even in the most adverse moments of history. James Suckling, in his authoritative book on Vintage Port, put it as follows: 'The vintage Ports of Fonseca are perhaps the most consistently great of them all. Not only do they have a striking fleshiness and powerful richness when young, but they retain that youthfulness for decades.' This consistency derives not only from continuity of family involvement, and the knowledge and skill passed down from one generation to the next, but also a close link with the vineyard. The firm's three estates of Cruzeiro, Panascal and Santo Antnio are the heart of the distinctive character of Fonseca's Vintage Ports.

Fonseca's respect for the vineyard and the unique environment of the Douro Valley expresses itself in the firm's leadership in the field of sustainable and organic viticulture. It was the first house to offer a Port made entirely from organically produced grapes.