Revenge is a Dish Best Served Cold with Shiitake Mushroom Sauce (Japanese: 風雲忍者城!クチビルにルビーにブタのおしり...ってどんなアニメじゃ〜!! Elemental Ninja Castle! Lips to Ruby to a Pig's Butt...From What Anime?! ) is the thirtith episode of the Bobobo-bo Bo-bobo anime. It was first broadcast in Japan on August 7, 2004, and in the United States on May 27, 2006.