Taking plums from local farmers they were distilled into a plum eau-de-vie that was then aged in oak barrels. In the main, fruit eau-de-vie is never stored in barrels and so remains a crisp clear fruit laden spirit (Like his Framboise, Mirabelle and Poire Williams). Adopting the practices of his Cognac and Armagnac producing neighbours Louis Roque left the plum spirit in oak barrels that served to intensify the fruit and give it both softness and complexity.
As time progressed the distillery ceased distilling and sourced plum eau-de-vie from many plum growers. The craft of blending and aging became their passion. Today Louis Roque is regarded as the most unique and iconic of Vieille Prunes.