The Colli Orientali region stretches across the hilly area of the province of Udine, between Tarcento, Nimis, Cividale del Friuli, Prepotto, Manzano and Corno di Rosazzo. It is a diverse wine-growing landscape, characterised by elevations ranging roughly from 100 to 350 metres above sea level and by a variety of aspect, slopes and microclimates that contribute to the distinctive character of the wines.
The most characteristic geological formation is ponca, a deposit composed of marl and sandstone of marine origin, formed through ancient sedimentation processes. These soils, which are often poor and well-drained, favour viticulture capable of expressing finesse, depth and a distinct mineral character. The climate varies considerably across the region: in the northern areas, close to the Julian Pre-Alps, cooler and more humid conditions prevail; towards the south, the climate becomes progressively milder and drier, with a greater influence from air currents coming from the plain and the Adriatic.
The ampelographic heritage includes well-adapted international varieties and numerous indigenous grape varieties, including Friulano, Ribolla Gialla, Malvasia Istriana, Verduzzo Friulano, Picolit, Refosco dal Peduncolo Rosso, Schioppettino, Pignolo and Tazzelenghe. This results in a wide range of wines, spanning from fragrant, elegant whites with great tension to reds with an intense, spicy and structured profile, right through to the dried and sweet wines associated with Picolit. The recognised sub-zones further enhance local identities such as Schioppettino di Prepotto, Refosco di Faedis, Ribolla Gialla di Rosazzo and Pignolo di Rosazzo.
The winemaking tradition combines manual harvesting, careful grape selection and the judicious use of contemporary winemaking techniques. Since the appellation was recognised in 1970, the region has established a wine culture based on the interplay between historic grape varieties, research and a precise understanding of the various hillside crus.