You might get several differing opinions...let's see, aye?!
My method is just to run the first tank thru as rich as possable and still stay running. Sometimes I'll leave the plug battery on for awhile...meaning it's running so rich that if you take the batt. off, it'll quit on you.
Then lean it out some for the next tank, so that the plug batt. is not required, but still quite rich.

I will generally just run a couple- three tanks through an engine on a stand, then fly it...because I think extended test stand running is just a waste of fuel.
If you can get the carb adjusted to give you a decent idle and transition, then put in in the airplane and fly it, because it will get better cooling airflow there. (unless it's in a tight cowl or something )