Load it and smoke it.
The first few bowls may get a funky taste at the bottom of the bowl. That is the protruding shank burning off. I usually let put it aside when I get the taste and let it go out. Eventually the bottom of the bowl will fill in with cake/ash/something. I have been known to pack some cigar ash in there to speed up the process. The moisture of the tobacco as you smoke will dampen the cigar ash and it will "go off," and get hard as cement.