I just finished Preacher season 3 and right in the first episode (Angelville) Madame L'Angell request the Preacher something called "transpoil".
I tried googling but couldn't find any mention of this anywhere, except for some product pages for waste oil extraction pumps... It's also not even mentioned for the rest of the season.
So what is this transpoil she asks for? Is there any explanation in the comics, is it something real world psychics / mystics use, or is it a redneck name for something?