Mencía, known as Jaen in Portugal, is a grape variety native to the western part of the Iberian Peninsula. In Spain, it is planted on over 9,100 hectares (22,000 acres), with another 2,500 hectares (6,200 acres) in neighboring Portugal. It is primarily found in the Bierzo, Ribeira Sacra, Valdeorras, Monterrei and Dão wine regions. Since the 1990s, the grape is increasing in popularity, and an increasing number of noted Spanish winemakers are now working with it.