The bowl covered with wet paper towel routine described in the article by GLP is what I've used with good result.
Check the tobacco every few hours, gently mix it around when you do check it.
Granted this requires a bit more attention than the sop it and forget it approaches but it does allow you to have complete control over the amount of moisture re-introduced as well as uniformity in distribution.
All I would add is the use of distilled water doesn't really make sense in this particular methodology.
In as much as the paper towel is not in direct contact with the tobacco it would seem that any minerals present in the water would remain in the towel.
S'pose if your water has a smell to it, you'd want to use distilled.
Check the tobacco every few hours, gently mix it around when you do check it.
Granted this requires a bit more attention than the sop it and forget it approaches but it does allow you to have complete control over the amount of moisture re-introduced as well as uniformity in distribution.
All I would add is the use of distilled water doesn't really make sense in this particular methodology.
In as much as the paper towel is not in direct contact with the tobacco it would seem that any minerals present in the water would remain in the towel.
S'pose if your water has a smell to it, you'd want to use distilled.