The newer Drew Estates Tsuge pipes use tobacco in the base as kind of absorbent filter. Kind of like where the little pipe cleaner ring is on a falcon. As I was cleaning out my Peterson the other day, and dumping out the unsmoked dottle from the bottom that used to be some very nice Virginia flake, I was wondering about intentionally placing a cheaper and maybe even dryer tobacco at the bottom of a bowl to be used intentionally as an absorbent filter. Has anyone tried this? Does it change the flavor of the main tobacco much? Are there particularly cheap, absorbent and neutrally flavored tobaccos that you would recommend?