I use meer chips in the bottom of my bowls and they have multiple benefits.
But if the tobacco is too moist going in, it's still probably going to taste bad and give you other problems, no matter what you might put down there.
I don't like doing the microwave thing, I think it is too harsh on the leaf.
Here is what I have started doing during the onset of humidity this summer:
Take a Stainless Steel mesh flour sifter, and a heat gun. A hair-dryer would be fine too.
Put some paper underneath the sifter and spread out a bowlful of tobacco in the bottom of the sifter.
Gently warm the tobacco for 30 to 60 seconds. Do not do this from underneath the sifter.
I use a heat gun set on low, and I keep the nozzle a foot or more away, and I like to keep it moving in circles.
When you stop heating it, flip the tobacco around a little bit to get some air flowing while the warm moisture evaporates.
Let the tobacco and stainless cool off for a minute, and you think that it is probably no longer releasing moisture.
Check moisture level of tobacco.
Repeat process if it has cooled off and is not dry enough.
Usually two 30 second cycles does it for me, with a heat gun on low.
Pack immediately after it cools off because it is going to start drawing in moisture from the air. You can cover the top of the bowl somehow after you pack it and it will stay pretty dry if you don't want to smoke it right away.
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