Omnishambles

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

The plan was an omnishambles after the unexpected events.

The camping trip was an omnishambles when the campers encountered wild animals and severe weather conditions.

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

The picnic became an omnishambles when it started raining heavily and the food got soaked.