Château la Coustarelle is owned by Michel and Nadine Cassot and located in the village of Prayssac, next to the renowned Clos de Gamot. Their 30-year-old vines are planted on slopes that give yields of between 45-50 hl/ha. This Grand Cuvée Prestige sees a 20-day fermentation period, after which aging takes place in oak barrels, a fifth of which is new each year. The 3,000 case production is bottled unfiltered.