https://www.snopes.com/fact-check/finger-food/
“Fortunately, improved health and safety standards in food processing make such occurrences quite rare, and most reports of consumers finding body parts in food turn out to be hoaxes, frauds perpetrated to extort money from businesses, or cases of mistaken identity. (In the latter case, something that looks like a human body is often found, upon examination by experts, to be something else entirely. See, for example, our page about a scare involving a finger supposedly found in a can of menudo.) In March 2005, the news media were once again full of reports that such a grisly discovery had been made.
On the evening of 22 March 2005, Anna Ayala, a 39-year-old resident of Las Vegas was dining at a San Jose outlet of the Wendy’s fast food restaurant chain when she discovered what appeared to be a human finger in her bowl of chili”
WEndy’s gave her the finger, no extra charge.