Most idiotic to cook food on street (7)

I believe the answer is:

dopiest

'most idiotic' is the definition.

'cook food on street' is the wordplay.
'cook' becomes 'do' (I've seen this in other clues).
'food' becomes 'pie' (pie is a kind of food).
'on street' becomes 'st' (I've seen this in other clues).
'do'+'pie'+'st'='DOPIEST'

'to' is the link.

I've seen this clue in The Guardian.

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