Terrano (grape)
Terrano () is a Slovenian and Italian wine variety (not to be confused with a completely different grape variety also called Teran, which is indigenous to the Croatian part of the Istrian peninsula), bearing the mark of recognized traditional denomination. It is a member of the Refosco family of grape varieties, which also includes Refosco dal Peduncolo Rosso. Since 2006 it is a wine with a protected designation of origin (PDO) within European Union under the protected designation "Teran". Traditional Slovene Kraški teran does not age well—notably, chemical analyses have confirmed that the content of bivalent iron starts to diminish radically two years after fermentation—and should be consumed within its first year; after that, the wine quickly loses its attractive vitality and can even become bitter and flat. Regions Terrano wine is primarily grown on the Karst Plateau within the Slovene Littoral wine region (where it is called Kraški teran 'Karst Terrano') and Italian Carso DOC (with two main varieties called Terrano del Carso 'Karst Terrano' and Carso Rosso 'Karst Red'). Terrano is the principal red wine grape in these regions. In the Carso DOC, the grape is sometimes blended with Piccola nera. In Italy it is also used in