http://www.wineloverspage.com/wineadvisor2/tswa20091223.phpSome consider it a particularly appropriate wine for Christmas, too, observing that the common abbreviation, "PX," resembles the Greek letters Chi (which looks like an "X" but is sounded as "CH") and Rho (which looks like a "P" but stands for "R") ... in other words, the Chi-Ro of ancient Christianity, "CHR," an abbreviation and symbol of Christ.
There's no evidence that Pedro Ximenez was named with this in mind, and there's not likely much truth in the old story that the grape was brought to Spain from the Rhine, of all places, by a traveler named Peter Siemens, whose name the Spaniards rendered as, well, Pedro Ximenez. I'd place its etymology in category "unknown," and welcome information from anyone who has a better, verifiable story.
I like the story about PX being derived from Chi Rho as being the most elegant - even if it is not verifiable - or even untrue.
There is very little Pedro Ximénez actually grown in Jerez. Nearly all of it is "imported" from Montilla but matured in Jerez. This is allowed as that was the practice before Jerez split from Montilla (so I have been told) and the practice grandfathered.
Robin reminds us of the classic PX and vanilla ice cream combo. "Pour a healthy drop atop a scoop of fine quality vanilla ice cream, and dig into the best grown-up sundae you could imagine."
I've invented another one which I'll have tomorrow.
Pour a healthy drop of PX onto steaming hot porridge. Just the thing to begin a day destined to be ended with PX on vanilla ice cream.