50% Syrah/25% Grenache/15% Carignan/10% Cinsault. The vines average 40 years old, with some of them being up over 100 years old, and are planted on clay-limestone soils. The fruit is sustainably farmed and harvested partly by hand and partly by machine.  The Syrah and Grenache are destemmed and macerated for 3-4 weeks in concrete vats. Carignan and Cinsault remain in whole clusters for a full carbonic maceration in steel tanks. Fermentation is with selected yeasts. The varieties are blended and bottled with a light, non-sterile filtration and a very small dose of sulfur.

"Les Hérétiques" is a nod to the Cathars, a heretical Christian group based in the Languedoc but wiped out by order of Pope Innocent III in 1208 in response to the murder of a papal representative by a Cathar supporter near Minervois. The castle which is the home of Château d'Oupia dates back to this time as well. The striking label was designed by Joe Dressner himself.