Originally Posted by tpenick
Fired up my brand new UDS today, and I just could NOT control the temperature while using natural oak lump. I ended up opening all the valves and letting it burn hot and quick, then using briquettes instead and those worked wonderfully. Did a couple of fatties and a rack of St. Louis spare ribs. Turned out great. I was very discouraged after the lump temps went crazy, but now I'm doubly excited as the results speak for themselves.
I had exact same result with lump coals. Plus also a nasty smelling smoke because I didn't let it burn long enough or whatever. Plain natural charcoal works great, with some wood chunks for the flavoring.
I can run the UDS at 225 for a good 15 hours.. sometimes 20.