I picked up a drum that was used for olive oil and I want/need to do a burn out(I think?) It is already cut in half and I plan to use it for a vertical rotisserie build. Do I just fill it with wood and let it burn for several hours? Then just scrub it out? I won't actually cook in it but it will be used to house a vertically mounted heat source with a rotisserie in front of it. Hopefully it will have a similar effect to these vertical cookers below. only on a smaller scale Thanks for any input.