Savoie native variety but also grown in the Ain and Isère, Altesse grape is called Roussette as well. Ampelographic studies give it a cousinhood with Viognier, Marsanne, Roussanne, or Syrah and Mondeuse.
Altesse is part of vine appellations Bugey, Roussette de Savoie, Roussette du Bugey, Seyssel and Vin de Savoie. It is on the hillsides of Jongieux in Savoy, that gives it its name Marestel the most advanced aromatic expression.

Alone or combined with other grapes (Chardonnay, Mondeuse blanche), it provides two types of wine: either dry white, generous, full-bodied, aromatic, elegant and suited to aging, or soft white, sparkling or effervescent.