These wines are similar to vins doux naturels but are sweeter and have more flavor influence from the added brandy.[1] A vin de liqueur is usually served as an apéritif.
Production
The unfermented grape must is fortified with brandy until the solution reaches an alcohol level of 16%–22%. The resulting wine is left with a high level of residual sugar because most strains of yeast cannot reproduce at such a high alcohol level.[1]