The Manhattan Deli of Mentor 8900 Mentor Ave, Mentor, OH44060 The Manhattan Deli is located in the Mentor Corners Shopping Plaza. It opened in 1987 and has grown so popular, it has…More been named one of the top three delis in Cleveland by The Cleveland Magazine. The deli offers its customers breakfast, lunch and dinner, as well as catering large events. Its menu is diverse, including low-carb and no-carb diet alternatives. The Manhattan Deli of Mentor also sells its own brand of Litani Olive Oil, straight from groves in Lebanon made fresh in its very own press.