Not all tobacco ages the same
How well tobacco ages also depends largely on the tobacco
itself. Let's look at the three different categories and two opinions
on them.
Virginias
Greg Pease:
Generally, any tobacco with plenty of natural sugars will
age wonderfully. Virginias, especially those with perique, will
age for longer than any of us will, it seems.
Dan Pipe:
The flavors
will change due to fermentation processes -- tobaccos get milder,
smoother with more full-bodied character; flake tobaccos (some
blended with Perique) may also get stronger.
English Blends
Greg Pease:
English blends seem to fare less well, though 20 years
appears safe for just about anything.
Dan Pipe:
Natural leaf mixtures in the "English style"
(with Latakia) can well be stored for 2 or 3 years.
Aromatic Blends
Greg Pease: It's
depends on how aromatic the Virginias are. Three Nuns, I am quite
convinced, has a top note added, and it doesn't hurt it in the
least. However, even sauced tobaccos won't go "bad"
over the period of a few years. The stuff just may not age properly.
Dan Pipe:
With Black Cavendish serving as the flavor
carrying base the aroma additions are most probably affected and
often decomposed by the fermentation process and may change or
even spoil the mixture's original flavor.