Ribolla Gialla Spumante Metodo Classico (WhSp): Minimum 85% Ribolla Gialla; maximum 15% Chardonnay, Pinot Bianco, Pinot Grigio, and/or Pinot Nero
Significant Production Rules
Standard Spumante and Ribolla Gialla Spumante must be fermented in autoclaves for a minimum of 18 months (9 months if the autoclave uses stirrers)
Vintage-dated Spumante and Ribolla Gialla Spumante must be fermented in autoclaves for a minimum of 90 days (30 days if the autoclave uses stirrers)
Metodo Classico wines must undergo second fermentation in bottles, beginning no earlier than February 1, V+1, and lasting at least 9 months, followed by another 9 months or more of bottle aging after disgorgement
Minimum alcohol level: 10.5% for all still wines; 11.0% for all sparkling wines
Residual sugar: Spumante and Ribolla Gialla Spumante can range from extra brut to extra dry; Metodo Classico wines can range from pas dosè (zero dosage) to extra dry
Aging: For vintage-dated Spumante and Ribolla Gialla Spumante, minimum 2 years (ERD = November 1, V+2); for Metodo Classico wines, minimum 25 months after beginning second fermentation (ERD = March 1, V+3); for vintage-dated Metodo Classico wines, minimum 37 months after beginning second fermentation (ERD = December 1, V+3)