Oslavia is one of the most recognisable expressions of the Collio, a small, hilly border region where viticulture thrives on slopes that are often south-facing, at moderate altitudes and with significant variations in aspect. The wine-growing landscape is characterised by ‘ponca’, the distinctive Eocene flysch formed by alternating layers of marl and sandstone: poor, crumbly soils rich in minerals, which promote the balanced development of the vines and lend the wines significant depth of expression.
The climate is mild and breezy, influenced by the shelter provided by the Julian Pre-Alps, the proximity of the Adriatic Sea and the easterly winds that sweep through the Vipava Valley. The breezes help to keep humidity in check and contribute to the healthy ripening of the grapes, in an environment characterised by abundant rainfall and marked daily temperature variations due to the local topography.
The flagship grape variety is Ribolla Gialla, produced both as fresh, fragrant wines and through winemaking techniques involving skin contact, which enhance its structure, tannic texture and complexity. Oslavia is also rooted in a tradition of spontaneous fermentation, extended skin contact, ageing in wood and wines capable of evolving over time. Alongside Ribolla, the range includes Friulano, Sauvignon, Malvasia, Chardonnay and Pinot Grigio, producing white wines with a distinct sense of place.