Why it matters
The producer
Vignobles Diffonty is a family estate whose wines sit under the Châteauneuf-du-Pape and Côtes-du-Rhône appellations. Félicien Désiré Diffonty began the domaine with two hectares in 1900, and it had grown to 10 hectares by 1930. Today the vineyard covers 22 hectares, so the estate has moved from a small family holding to a range with room for more than one reading of the southern Rhône: the supple, dark-fruited Cuvée du Vatican and the more firmly built Château Sixtine.
Jean-Marc Diffonty has managed the domaine since 1993, as the third generation of active stewardship. His work shifted the estate toward more natural and ecological methods; Château Sixtine received organic certification in 2024. The practical result is not a new name for the wines, but a vineyard programme that now sits behind bottles made in the same two appellations.
Place and vineyards
Where the wines begin
Châteauneuf-du-Pape is the principal address in the Diffonty story, while Côtes-du-Rhône gives the estate a second appellation within its range. On the label, those names distinguish wines by their formal growing and production homes rather than by a separate brand alone. The named Châteauneuf-du-Pape bottlings show why that distinction matters in the glass: Cuvée du Vatican 2022 is described through dark fruit and yielding tannin, while Château Sixtine 2022 has a tighter tannin frame and is intended for a longer wait.
The family’s connection to these lands is older than the estate itself, reaching to the 17th century, with documented viticulture from 1800. That long local continuity leads to a modern range where the appellation name remains fixed but the cuvée name signals a different shape of red wine: one open in texture, one more compact in structure.
In the cellar
Vineyards and cellar
For the reds, Diffonty uses a 12-month élevage divided between vats, casks and tanks. Using several vessel types allows the cellar to work with texture as well as fruit: tank can keep dark-fruit character direct, while cask ageing can broaden the mid-palate and soften the edges of tannin. Cuvée du Vatican 2022, with its silky feel and melted tannins, is the clearest supplied example of that softer presentation; Château Sixtine 2022 retains a tighter tannin shape.
The white wine follows a different route, ageing for nine months in casks with bâtonnage, the stirring of its lees. Lees contact can add body and a creamier texture, while the cask ageing gives the wine time to settle into a longer finish. The method matters because it separates the white from a simple fruit-only style: texture is part of the intended result.
Wines to know
The range in view
The range spans AOC Châteauneuf-du-Pape and Côtes-du-Rhône, with Cuvée du Vatican and Château Sixtine as the clearest named red cuvées. Cuvée du Vatican 2022 is the more open side of the estate’s Châteauneuf-du-Pape work: dark fruit, a silky texture and tannins described as melted. Its palate is shaped around fruit and softness rather than a hard, drying grip.
Château Sixtine 2022 takes a different line. Its tannins are tighter, so the fruit arrives within a firmer frame and the wine has greater stated ageing potential. Cuvée du Vatican 2015 adds a useful reminder that the estate’s wines are also followed across vintage development, though the immediate contrast remains between the yielding 2022 Vatican and the more structured 2022 Sixtine.
A useful way in
A bottle to begin with
Start with Cuvée du Vatican 2022. It is a Châteauneuf-du-Pape red with dark fruit, silky texture and melted tannins, making its shape easy to recognise from the first glass. The 12-month red-wine élevage in vats, casks and tanks sits behind a palate where fruit remains present while the tannin feels integrated into the body. It comes first because it introduces Diffonty’s Châteauneuf-du-Pape without requiring a cellar wait; Château Sixtine 2022 can follow when a firmer tannin frame and longer ageing path are wanted.