I think the foil-lined cardboard tin with the sealed foil top (covered by a snap plastic top) is good for quite
a while, I'd say at least five years. Why do I think so? I have received several Sutliff blends in pipe show
goody bags, and I feel these usually come from overstock, somewhere, not right from the blending shop.
Plus, I have kept them over months, sometimes more than a year. The do just fine, retain some moisture,
and smoke well. Second, a number of the OTC tobaccos now come in the same kind of foil can, and I
know these big 12 oz or 14 oz "cans" last a good while. I have a two-year-old partial can of Granger that's
been opened for more than a year. I always close the snap plastic top carefully. It's doing just fine. If anything,
letting some of the dressing dry out or gas off makes the tobacco better and it doesn't dry out. If you want to
age the Sutliff blends, go ahead and put them in a jar, but if you are thinking about a year or two before
opening, from experience, I'd say it is not a problem in the cardboard/foil so-called tin. Tobacco is somewhat
forgiving or the whaling crews who kept their tobacco in cloth bags aboard ship wouldn't have bothered to
keep pipes and tobacco at all.