I did put the question to John Callahan, lead brewer at Yuengling's "new" Pottsville facility: is 'porterine used in brewing the Yuengling Porter? No porterine, he said, "our Porters are brewed with Briess specialty malts$$$, and it is the oldest, along with Chesterfield Ale, of our recipes."
Doubters? Believers? John's a pretty stand-up guy, based on the impressions he's made on me on this day and at the MBAA meeting we attended last year. I buy it.