Castel del Monte is an Italian wine region located in Apulia that has been awarded DOCG status—the highest category in Italian wine regulations—for their wines made from purple-skinned Nero di Troia grapes. Also known as Uva di Troia, this native Apulian grape tends to produce rich, full-bodied wines and for this appellation, it has to make up at least 90% of the blend, while the wine must be aged for a minimum of two years, including one year in oak.