18 municipalities around a low hill system, between 150 and 400 meters above sea level, with a temperate or warm temperate (about 18° degree/day), little windy and with an average annual rainfall of around 700 mm.
There are 43 manufacturers who share the aim of creating with commitment a wine to excellence.
Vineyards normally occupy the slopes best exposed (quadrant from southeast to west) excluding the valley floor.
The production area is at the center of the so-called tertiary basin of Piedmont, the hill system originated from the seafloor uplift in tertiary epoch; the soils are mainly limestone, medium depth and resting on rocky matrix limestone-sandstone marl.
The product specification sets very strict constraints on cultivation and oenological plan to maintain high quality standards.