Maitre Delish is well known as a famous chef. He made many cookbooks where it is said to make anyone into a master chef upon reading it. Zess T., the chef of Rogueport, posted a trouble at the Trouble Center where she wanted the cookbook of Maitre Delish. She states that the only known other copy is in the Creepy Steeple. Mario can find Maitre Delish's cookbook in a secret room of the Creepy Steeple and handing it to Zess T. allows her to cook two ingredients together for a better dish.