A booze-loving chef who once worked at the posh Jean-Georges Vongerichten restaurant Spice Market pleaded guilty yesterday to felony assault for pounding an elderly man like a veal cutlet during an unprovoked outburst on Bleecker Street last October.

Matthew Redington, 29, left Joon Ha Yoon, 71, with cuts and bruises all over his face after screaming, “Why did you bump into me?”

Under the deal, Redington will stay out of jail and serve one year of monitoring followed by five years probation. Prosecutors complained he has been in and out of alcohol-treatment programs, and still drinks.

He must stay sober or face serious prison time, said Manhattan Supreme Court Justice A. Kirke Bartley.