Colli Tortonesi DOC covers the hills surrounding Tortona in south-eastern Piedmont, between the Po Valley and the Ligurian Apennines. Its landscape is defined by rolling ridges, varied exposures and soils commonly composed of marl, clay, limestone and sandy deposits. This geological mosaic, together with elevated sites and well-ventilated vineyards, provides distinct settings for both white and red varieties. The climate combines continental conditions with moderating air currents from Liguria, while marked day-to-night temperature shifts help preserve aromatics, acidity and gradual phenolic ripening.
Timorasso is the denomination’s defining indigenous grape. It produces structured, vibrant whites with citrus, white-flower, herbal and mineral tones, as well as notable capacity for evolution. After a period of limited cultivation, it was restored to a central place in the area’s identity through the work of committed local growers and producers. Other white grapes include Cortese, Favorita, Chardonnay, Sauvignon and Pinot Nero. Barbera, Dolcetto and Croatina are especially important among the red varieties, with Freisa, Moscato and other permitted grapes contributing to specific wine styles.
Viticulture is closely linked to site selection. White grapes often occupy cooler, higher or north-easterly parcels, whereas red varieties are frequently planted on warmer, sunnier slopes with calcareous and clay-rich soils. Hand harvesting and carefully chosen picking dates help retain freshness and varietal definition. White wines are generally fermented at controlled temperatures in stainless steel; Timorasso in particular may also spend extended time on its lees and undergo discreet maturation in wood. Red wines are commonly fermented on their skins, with maceration tailored to grape variety and vintage conditions. Ageing may take place in inert vessels or wood, according to the desired balance of fruit, spice and tannic structure. The DOC therefore unites an old vine-growing tradition with a contemporary, site-conscious interpretation of the Tortona hills.
