yaddy, thank you for the link. Very interesting. It certainly seems reasonable that the processes described are at least probable in pipe tobacco as well, but jmatt makes some good points too. Though the article is probably at least partly applicable, there are enough differences in pipe tobacco composition and storage that I don't think it can be believed to account for everything.
BTW, xylitol is a sort of sugar.
It would be great to know more about these things guys, just what we are dealing with in our tobacco and maybe aquadoc will finally shed some unique light on the topic when he can. But it is just bloom on our tobacco, I love the stuff no matter what it is, and there should be no hard feelings between friends! :mrgreen: