As mentioned by most, best to pull apart when it’s cooled down.
Beeswax is also good to apply some on the tenon, to make it easier to go in. I highly recommend always using it, especially on tight fits.
@pepperandjack Depending on how often smoked, it should be removed occasionally, so the mortise and shank can also be swabbed out, at this point in time, with a pipe cleaner, and q-tip as an example dipped in like a high grain alcohol. Tar will eventually accumulate. Use beeswax as I mentioned for the tenons.