Because there is a difference between staged and prepared.
Likely what happens is the show knows in advance what the chefs need and make it available.
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Yes. How else would the show work?
By staging it, apparently
How much could it cost to have a handful of requested groceries for a few chefs, knowing some of whom won’t move further, compared to the entire cost of producing the show?
In Iron Chef the contestants were given a bunch of possibilities for the key ingredient, they could then prep and request ingredients based on those
You are talking about television. Television is full of manufactured drama. People get bored and consume drama so television manufactures it.
If it was staged why did the donut plant guy have a panic attack and almost cancel the whole episode?