Hi Andrew,
Good question. I haven't tried that particular blend, but I suppose the answer would be related to how fast you will smoke it up.
I've been on a Grousemoor kick lately; it smokes best (IMHO) when it crackling dry, but my experience with Virginias tells me that some moisture is a good thing. If you leave the tin open, over say a week, then I think the quality may suffer.
As for just drying one bowl at a time, I would and do dry more than one bowl at a time. This is a good place to put forward the concept of "DGT" Delayed Gratification Technique.
DGT comes in many forms, and everyone seems to have a preferred method/technique.
Simply put, Delayed Gratification Technique is a way to prepare your tobacco, anticipating that you will smoke it in the near future. I practice this in a couple-three different manners. Like the esteemed host of our
Pipes Magazine Radio Show Brian Levine and a number of our Members, I will pack a pipe and "char light" it, tamp it out, then set it aside to be smoked later in the day, or when driving.
Or, I'll pack a pipe with fresh tobacco before bed, planning to smoke it with my morning Josephus Daniels. This allows it to dry over night. It might be noted (and this is my opinion based on anecdotal observation) that I believe the drying of tobacco in a pipe is quite different than drying it on a "surface" like a saucer for example. Because; the amount of tobacco exposed directly to the air (surface area a packed bowl) will restrict the drying rate compared to spread out on a surface.
There is one additional benefit to DGT... When you're ready for that pipe you know is waiting... You don't have to prepare it. It's ready to gratify.
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