<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by Jim Warren:
[qb] Wondered if n e one else had ever noticed a rusty color residue inside middle section of WSM after a cook. Its in the lid as well. I been wiping it out each time. What is causing this? Is it the moisture from the water pan? [/qb] <HR></BLOCKQUOTE>Smoke particles and water vapor-- but it's usually more pronounced on the underside of the lid, where it eventually starts flaking off. The soot that builds up over time on the inside of the WSM is, as Martha says, "a good thing". Wipe or brush it lightly to remove the flakiness, but that buildup is desirable for temperature control.