Port wine be labelled as "port" or "Porto". In the United States, wines labelled "port" may come from anywhere in the world, while the names "Oporto", "Porto", and "Vinho do Porto" have been recognized as foreign, non-generic names for port wines originating in Portugal. Port is produced from grapes grown and processed in the demarcated Douro region. The wine produced is then fortified by the addition of a neutral grape spirit known as aguardente in order to stop the fermentation, leaving residual sugar in the wine, and to boost the alcohol content. The fortification spirit is sometimes referred to as brandy but
Giuseppe Verdi between Verdi and his parents was perhaps also attributable to Strepponi (the suggestion that this situation was sparked by the birth of a child to Verdi and Strepponi which was given away as a foundling lacks any firm evidence). In January 1851, Verdi broke off relations with his parents, and in April they were ordered to leave Sant'Agata; Verdi found new premises for them and helped them financially to settle into their new home. It may not be coincidental that all six Verdi operas written in the period 1849–53 ("La battaglia, Luisa Miller, Stiffelio, Rigoletto, Il trovatore" and "La traviata"),