I’m with Suziq on this one...
Back home the bagel shop used to have a “Southern Pecan” flavored coffee. Really good. I’d always ask for “pe-CAHN” coffee, and they’d correct me. “The PEE-can flavored coffee?”
That just sounds nasty.
There's still a difference in the way Suzi says it.
It's puh-cahn, not pe-cahn...but even that varies in the south. Nana would say pee-can.