Commission Regulation (EEC) No. 3901/91 laying down certain detailed rules on the description and presentation of special wines.

This Regulation establishes labelling requirements with respect to certain wines. In accordance with article 1, the actual alcoholic strength by volume indicated on the labelling of liqueur wines, semi-sparkling wines and aerated semi-sparkling wines shall be expressed as a unit or half-unit percentage by volume. The actual alcoholic strength by volume indicated may not be more than 0,8 % vol more or less than the strength determined by analysis. The figure expressing the actual alcoholic strength by volume shall be followed by the symbol '% vol` and may be preceded by the words 'actual alcoholic strength` or 'actual alcohol`, or the abbreviation 'alc.`. It shall be indicated on the labelling in lettering which is not less than 3 mm high.