Glera, also known as Prosecco, is a white Grape variety of  Slovenian origin, which was brought to the village of Prosecco (Slovene: Prosek) from the Karst region. The variety was formerly mostly referred to as Prosecco, but in the EU was renamed "Glera" in 2009 to make room for the protection of "Prosecco" as the name of a geographically-protected wine.Glera is a rather neutral grape variety which is mainly cultivated for use in sparkling Italian wine styles, frizzante or spumante, from the various Prosecco DOCG and DOC areas, although still wines also exist.It is grown mainly in the Veneto region of Italy, traditionally in an area near Conegliano and Valdobbiadene, in the hills north of Treviso.