I have a rectangular Pyrex glass baking dish with a Tupperware-like cover that I use to rehydrate pipe tobacco that I feel has become too dry for my personal tastes. I spread the tobacco out evenly along the bottom in what turns out to be a fairly thin layer, then use a small spray bottle that I picked up at Target for about a dollar to spray the tobacco lightly. I cover the dish/tobacco with the cover, leave it for about 24 hours, then mix it all together & put it back in the Mason jar. Works beautifully to bring the baccy to just the right (for me) level of moisture. While I haven't used whiskey or cognac, it works great with rum or distilled H2O so I suppose other liquors would work too.