Which key wine region in Piemonte is known for producing wines from Nebbiolo?

The key wine region in Piemonte known for producing wines from Nebbiolo is Barolo DOCG. This area is renowned for its exceptional Nebbiolo wines, which are characterized by their high acidity, tannins, and complex aromas of tar, roses, and red fruits. Barolo is often considered the "king" of Nebbiolo wines and is recognized for its aging potential and depth of flavor.

The Barolo region has specific regulations under the DOCG designation, ensuring high-quality standards in grape selection and production methods. The unique terroir, including the soil composition and climate, contributes significantly to the distinct characteristics of Barolo wines, making them highly sought after by wine enthusiasts.

Other regions mentioned, while they produce notable wines, are not primarily recognized for Nebbiolo. Gavi DOCG is known for white wines made from the Cortese grape, Barbera d'Asti DOCG focuses on the Barbera grape, and Roero DOCG, although it does produce some Nebbiolo, is lesser-known compared to Barolo for this grape variety.