That was a scam at a local Wendy's. Someone bought a severed finger and put it in their chili for a payday, but it backfired and they got jail time. I showed up that same week at Wendy's and ordered their chili in solidarity.
https://en.wikipedia.org/wiki/Anna_Ayala
Actually, this was a suspicious piece of meat that looked like a piece of a finger that they found in the vat of chili. (It wasn't made at the restaurant, they received it in commercial size #10 cans.) My friend who worked there said it never got served, they had to notify "corporate" but the general public never found out. He never heard the end result either. Who knows, it might not have actually been a finger....
This was in the early 80s -- before the Anna Ayala/Wendys case.