Oh man, let me think....
We used peanut oil...
It was like a 5 gallon pot on a propane stand....
It took something like 45 min.
Injected it with a Cajun marinade.
Season before....
Also, if your on concrete, like a patio or driveway, when it boils up and splashes it made a helluva mess. Last year, we put a 58" drip pan for a water heater under it....solved that problem.
Good luck and have fun.....