Passito (WhSw): No composition requirements listed in disciplinare; presumably the same as Bianco
Superiore (Passito)
Riserva (Passito)
Significant Production Rules
Minimum alcohol level: 10.5% for all wines except Novello, Superiore, and Riserva (14.0% potential for Passito); 11.0% for Novello; 11.5% for Superiore and Riserva
Residual sugar: Maximum 10 g/l (1.0%) for frizzante wines, except 10–40 g/l (1.0–4.0%) for Verduzzo frizzante; maximum 45 g/l (4.5%) for Verduzzo amabile; minimum 45 g/l (4.5%) for Verduzzo dolce; spumanti can range from extra brut to demisec
Aging: For Riserva, minimum 2 years (ERD = November 11, V+2)