Thanks for sending the notes on the Primitivo Appasito, a wine made many moons ago. We fortified it with beverage brandy purchased from Vie-Del winery in Fresno. It supplies many small and large wineries with fortifying brandy. Interestingly, our permit allowed us to buy brandy from brandy producers, but not to make it. The wine was made from the Archie Hanson vineyard in Templeton (picked November 26, 1991). My notes say that the wine at bottling had a pH of 3.38, which as you know is pretty low and may help to explain its apparently happy longevity. "Some sack, Francis" is a quote from Falstaff from Shakespeare's Henry IV, Part 2 (Act 2, Scene 4), and I guess that is a both a question and an order, saying both "Would you like some?" and "I would care for more." Sack is an old term for a fortified wine, the type both patricians and plebians enjoyed whenever it could be found and afforded.
All the best,