Originally Posted by Paul B
I was also wondering if anyone else seems to have a build up of a tar-like substance on the lid and if so suggestions to minimize or clean it safely.
That's just the good oozes the eminate from you smoking endeavors!!!! Some like the buildup to help seal the lid to the UDS.
Just my take.....
Paul's right; it helps the lid seal to the drum. I wouldn't fret over it too much.
But mine isn't like tar. It's more like black/dry/flakey. About once a year I give it a quick de-scaling with a wire wheel on a angle grinder. It's a nasty job.