AOP Grignan-les-Adhémar 

The area's wine traditions at least date back to the 1st century.
South of Donzère excavations of a Roman villa have shown that Villa du Mollard. On a Roman stone pillar nearby is the loading of wine in wooden barrels - of course for the purpose of transport via the Rhône River to Rome

The appellation was established in 1973 under the name Coteaux du Tricastin.
In 2010 the appellation changed its name to Grignan-les-Adhémar.
The background to the desire for a name change was not to be compromised by the name of a nuclear power plant  Tricastin NPC
Grignan and Adhémar were both important place names in the area's history.
At both sites you find compact medieval castle complexes

Cahier des Charges  (Rules for the appellationen - 2013)

The apellationen includes certain parcels in 21 communes in depardement Drôme: 
Allan, Baume-de-Transit,Chamaret, Chantemerle-lès-Grignan, Chateauneuf-du-Rhone, Clansayes, Coloncelle, Donzère, Garde-Adhémar, Granges-Gontardes, Grignan, Malataverne, Montségur-sur-Lauzon, Réauville, Roche-Saint-Secret-Béconne, Roussas, Saint-Paul-Trois-Châteaux, Saint-Restitut, Salles-sous-Bois, Solérieux, Valaurie.  
See eventually map with the communes.

The appellationen includes red, rosé and white wines

Allowed grape varieties:

Red and rosé wines
Primary varieties: Grenache, Syrah.
Other allowed gapes: Bourboulenc, Carignan, Cinsault, Clairette, Grenache Blanc, Marsanne, Marcelan, Mourvedre, Roussanne, Viognier.

White wines
Grenache Blanc, Clairette, Bourboulenc, Marsanne, Roussanne, Viognier.

Portions of grape varieties at the single domain (Encépagement)

Red and rosé wines
Share of primary varieties (Grenache and Syrah) must be at least 70%.
Share of Syrah have to be 30-80%.
Share of Grenache have to be 20-70%.
Share of Marselan must not exceed 10%.

White wines

No single variety may exceed 80%.
Viognier have to be at least 30%.

The blend in the single cuvée (Assemblage)

Red wines
Primary varieties (Grenache, Syrah) have to be at least 50%.
White varieties may not exceed 10%.

Rosé wines
Primary varieties (Grenache, Syrah) have to be at least 50%.
White varieties may not exceed 20%.

White wines
Bourboulenc and Clairette must together not exceed 50%.

Yield
Red and rosé max. 45 hl/ha. White wines max. 52 hl/ha.

Declared area and yield 2016-2020