What is the key wine denomination of Umbria?

The key wine denomination of Umbria is Orvieto DOC. This designation is particularly significant as it represents one of the most well-known white wine regions in Italy, primarily focusing on the production of dry and sweet white wines that are often made using the Grechetto and Trebbiano grape varieties. Orvieto wines are characterized by their crisp acidity, fruity and floral aromas, and mineral notes, which are reflective of the unique terroir of the region.

The other denominations listed, while important, are not key to Umbria. For instance, Grechetto DOC refers specifically to a DOC that could be relevant within Umbria but does not represent the overall wine identity of the region as Orvieto DOC does. Frascati DOC is associated with the Lazio region, near Rome, and although it produces notable wines, it is not part of Umbria. Conero DOCG, on the other hand, pertains to the Marche region and is recognized for its red wines made from Montepulciano and Sangiovese grapes, so it holds no relevance to Umbria's key wine denominations.