Wiese & Krohn's estate Quinta do Retiro Novo is located in Sarzedinho, a very small village in the Rio Torto valley. In this area the nature of the soil where the vines are growing, the altitude, the locality, the (low) productivity and the slope of the vineyards are particularly favorable to the production of quality Ports. Fermentation is halted by the addition of grape spirits before all the residual sugar has been fermented, creating a sweet, fortified wine. Single Quinta Vintage is a blend of ports from a single vineyard. Aged for 2 years in seasoned oak vats before bottling, this wine will continue to age in bottle for decades.