Introducing characters and techniques to give them initial focus and development only to completely ignore them for newer, shiniers characters and techniques was Shimabu's modus operandi from quite early on in the story.
@projectelf:
To be fair, I don't think he got bored. I think the ratings / volume sells were low or something, so they pretty much effectively axed it around Cooking Fest arc.
Manga sales peaked after the start of the anime, with volume 18 having the highest recorded number, a little short of half a million. Afterwards, the sales were in decline, but even after the end of the anime individual volumes were still making over 300000 copies, more than a year into the Gourmet World. So Toriko definitely had a chance to stabilize after the Cooking Fest and the end of the anime.
@KageKageKing:
^Pretty much that.
Also, I don't know why people bitch so much about Cooking Fest. It wasn't Marineford Good, but it wasn't Dressrosa Bad either.
With exception of Rebecca's plot thread, Dressrosa did pretty much everything it set out to do both narrative wise and character wise. Whatever, this is a Toriko thread, not One Piece one.
Cooking Fest completely ignored half of the manga's main characters, started a kidnapping plot only to resolve it offscreen, introduced a variety of new chefs only to give one a proper focus, and pulled the cheapest of twists to exchange Bishokukai who were built up from the beginning of the series for Neo of all things, the same Neo that proceeded to be completely irrelevant in the following arcs. A few decent fights - excluding a volume long fight of the main character which was his dullest until the Acacia slog - and one good flashback was a little to late to try and insert some emotional conflict into the series.