Ryan Kropp - who now faces a police probe - allegedly hid the hair in the meal for a customer who had complained about his steak being undercooked.
Diner Kevin Hansen had claimed his medium rare meat was in fact medium so restaurant manager Michael Liberatore insisted he had another one.
After getting the second steak, Hansen discovered the hair and took it to the police the following day to complain.
A police officer observed "several strands of what appeared to be hair coming out of the middle of the steak".
Kropp - who insisted it was just a prank - has been charged with placing foreign objects in edibles, carrying the threat of up to three and a half years in prison and a $10,000 fine.
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