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.

Floc de Gascogne is intended primarily as an aperitif or to drink with dessert. Due to its natural sweetness and high alcohol level, it is also widely used in cooking. It does not improve with bottle ageing and is generally consumed within a year of release.