The Colli Tortonesi DOC includes 30 communes, all of which are located in the province of Alessandria in Piedmont, and extends from the Monferrato to the Oltrepò Pavese.
The production of origin wines includes the following varieties:
Red wines: rosso and rosso novello, barbera and barbera superiore, dolcetto and dolcetto novella, croatina
Rosé wines: chiaretto
White wines: bianco, cortese, cortese frizzante and cortese spumante, favorita, moscato bianco and