Omnishambles

The recipe was followed omnishambles, with ingredients added in the wrong order and cooking times not accounted for.

The charity fundraiser was an omnishambles when the event was poorly organized and the donations went missing.

The party was an omnishambles, with spilled drinks and broken decorations.

The charity event was an omnishambles with misplaced donations.

The party turned into an omnishambles when the food was burnt and the music stopped.

He's an omnishambles of a cook, every dish he makes is a disaster.

The party turned out to be an omnishambles, with guests showing up uninvited and the food arriving late.