Prié Blanc is an indigenous white-skinned grape variety from the Aosta Valley, whose origins remain uncertain. It may originate from the Savoie or Valais regions, but in any case, its presence in the Aosta Valley dates back a very long time, and it is here that the grape has undergone the genetic mutations that have given it its current characteristics. The cultivation area of Prié Blanc is Morgex and La Salle, where, among terraces and dry stone walls, the grape is grown at an altitude between 900 and 1,200 meters, almost exceeding the recognized limit for vine cultivation, in what are the highest vineyards in Europe, located on the left bank of the Dora Baltea, between terraces and dry stone walls. Prié Blanc has a very short vegetative cycle, budding late in the spring and ripening early, in early September.

This allows it to escape the spring frosts and avoid the first snows. The traditional training system for Prié Blanc is a lowered version of the pergola, which helps protect the clusters from the wind and allows them to absorb the heat stored by the ground during the day at night. The high altitude minimizes the need for treatments and the use of pesticides. At the beginning of the last century, it also allowed Prié Blanc vineyards to remain immune to the phylloxera attack, and even today, many Prié Blanc vines in Morgex and La Salle are on their own roots.

The must of Prié Blanc is characterized by its pronounced acidity, making it suitable both for drying and for sparkling wine production with the classic method. In fact, its wine is produced in both still and sparkling versions using the classic method. Additionally, with Prié Blanc, an ice wine is produced from grapes harvested at the end of December when the temperature is below zero. The wine Blanc de Morgex et de La Salle is a Prié Blanc in purity. It has a straw-yellow color with greenish reflections, and on the nose, it smells of mountain herbs and hay, with a characteristic mineral background. On the palate, it stands out for its marked acidity. It is excellent as an aperitif and pairs very well with appetizers or fish dishes with simple preparations and light flavors.