So I picked up a chintzy farmer's almanac at my local Dollar Store and came across this nugget: Most of the trouble with chimneys filling up with soot may be avoided by burning potato parings. The chemical action is such that the soot is entirely cleaned out. Doing this every three to four weeks will keep the chimney clear and the draft good, no matter what fuel is used." Thought? Old wives tale, or is there something to this. I thought it was interesting, if nothing else. It's simple, and it probably can't hurt anyway.