There are several differing traditions about the annual burning of a Yule Log; this is ours.
Firstly the log must find you; not you find it. It must look up at you and say "take me home". It mustn't be looked for, as such.
The log (large or small) must be pampered, dressed with ribbons, and burned on Christmas Eve. It must burn right through to the last ash; even a tiny un-consumed remaining piece of the log would be seen as unfortunate, so the log should be dry.
This is our log.