What is the leading white grape variety used in producing cognac?

The leading white grape variety used in producing cognac is Ugni Blanc. This grape, also known as Trebbiano in Italy, is particularly suitable for the production of cognac because of its high acidity and neutral flavor profile, which allows the unique characteristics of the distillation and aging processes to shine through. The grapes are typically harvested early to preserve their acidity, which is crucial for the production of high-quality brandy.

In addition, Ugni Blanc’s relatively high yield and resistance to disease contribute to its popularity among producers. It is known for providing a fresh, floral, and fruity character that works well in the complex blends that define fine cognac. Thus, its distinct properties make it the preferred choice for cognac production over the other grape varieties listed.