Refosco dal Peduncolo Rosso (Rd): Minimum 85% Refosco + OANRG
Terrano (Rd): Minimum 85% Terrano + OANRG
Riserva (Rosso, Merlot, Refosco dal Peduncolo Rosso, Terrano)
Subzones and Other Geographic Terms
Classico, from the communes of Duino-Aurisina, Monrupino, Sgonico, and Trieste only
Significant Production Rules
Minimum alcohol level: 10.5% for Glera and Terrano; 11.0% for Terrano Riserva; 11.5% for all varietals except Glera and Terrano; 12.0% for all riservas except Terrano Riserva
Aging: For Rosso and varietals, minimum approx. 4–5 months (ERD = March 1, V+1); for white riservas, minimum 20 months (ERD = July 1, V+2); for red riservas, minimum 24 months, including 12 months in barrel and 5 months in bottle (ERD = April 1, V+3)