Mas de Daumas Gassac came to be seen as the first to prove that a French non-appellation wine (as simply labelled Vin de Pays de l'Hérault) may be an extremely serious, long-living red wine able to fetch prices similar to a Bordeaux classed growth.

Mas de Daumas Gassac is a French wine producer from the wine region Languedoc, classified as Vin de Pays de l'Hérault due to its use of grape varieties outside specifications of its AOC. The winery, producing both white and red wine, is located in the south of France, in the commune of Aniane. Despite its modest designation and location, the vineyard has received widespread acknowledgement, described by The Times to taste like a "Latour" and by the French gastronomic guide GaultMillau as the "Lafite Rothschild of the Languedoc-Roussillon", it is frequently referred to as the Grand cru of the Languedoc.