Mencía
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 , 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. Most wines produced from Mencía have traditionally been light, pale, relatively fragrant red wines for early consumption. This style of wine was the result of post-Phylloxera plantations on fertile plains, which tended to give high yields but diluted wine. In recent years, much more concentrated and complex wines have been produced by a new generation of winemakers, primarily from old vines growing on hillsides, often on schist soils, in combination with careful vineyard management. This has led to a renewed interest in Mencía and the denominaciones de origens using it, such as Bierzo, Valdeorras, Ribeira Sacra, Monterrei and the little-known Liébana. Since the 1990s, the grape is increasing in popularity, and an increasing number of noted Spanish winemakers are now working with it.
Source: Wikipedia