Floc de Gascogne is a sweet, strong liqueur, made by blending barely-fermenting grape juice with Armagnac brandy. It can be made in both white and rosé forms and can be produced in any vineyard which qualifies for the Bas Armagnac, Haut Armagnac and Armagnac-Tenareze titles. According to the Floc de Gascogne appellation laws, which were created in 1990, the grape juice and the brandy must have been produced from the same vineyard.
As an essentially unfermented product, Floc de Gascogne is very sweet, and has a high level of residual sugar. In fact, almost all of the sugars present in original grape juice remain in the finished product. The high level of alcohol comes from the Armagnac spirit, which raises the total alcoholic strength to roughly 17%. The resulting liqueur is aged for up to a year.