Primarily found in the Bierzo, Ribeira Sacra and Valdeorras regions of Spain and in the Dão of Portugal (where it is called Jaen), Mencia is an early ripening, low acid grape that can produce wines of great concentration, complexity and ageability. And yet Mencia once suffered from a poor reputation and deemed capable of producing simple and light red wines. Post-phylloxera growers would grow this variety on low, fertile plains, which produced high yields and uncomplicated finished wines. Somm Secret—The recent rediscovery of the ancient, abandoned vines planted on rugged hillsides of deep schist has unveiled the potential of Mencia and added discredit to its old reputation.