Which two wine regions of Piemonte predominantly produce Dolcetto?

The choice highlighting Dolcetto d'Alba DOC and Dogliani DOCG as the two wine regions in Piemonte that predominantly produce Dolcetto is indeed the most accurate. Dolcetto is a significant red grape variety specifically associated with these two regions.

Dolcetto d'Alba DOC is one of the appellations where the grape thrives, producing wines that are typically deep in color, with moderate acidity and soft tannins, showcasing fruit-forward profiles. Dogliani DOCG is another area dedicated to Dolcetto, recognized for producing high-quality wines that highlight the grape's characteristic dark berries, floral, and almond notes. Both of these regions demonstrate a strong commitment to the Dolcetto variety, making them prime producers of this wine.

In contrast, Barolo DOCG and Barbaresco DOCG focus entirely on Nebbiolo, while Gavi DOCG is primarily recognized for its Cortese white wines. Roero DOCG is also centered on Nebbiolo and features Arneis as a prominent white grape. Thus, these regions do not emphasize Dolcetto as their principal varietal. Understanding the unique characteristics and regional specializations of Piemonte is essential for recognizing the significant role Dolcetto plays in the wines produced there.