Delmonico SteakA Delmonico steak is a premium cut of beef thats typically thick, tender, and well marbled. The exact cut can vary depending on the source, but it is often associated with the ribeye or sirloin. Historically, the Delmonico name comes from the famous Delmonico's Restaurant in New York, where the steak was popularized in the 19th century. It is typically bone in and known for its rich flavor and tenderness.