The most common and most likely answer to this crossword clue is the 6 letter word RIGGED
I've seen this crossword clue in The Guardian
R
I
G
G
E
D
Buddy explains!
The straight part
We know that "cooked" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case cooked = rigged.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does RIGGED mean?
RIGGED verb- To fit out with a harness or other equipment.
- To equip and fit (a ship) with sails, shrouds, and yards.
- To dress or clothe in some costume.
- To make or construct something in haste or in a makeshift manner.
- To manipulate something dishonestly for personal gain or discriminatory purposes.
- To make free with; hence, to steal; to pilfer.
- To outfit a model with controls for animation.
- To play the wanton; to act in an unbecoming manner; to play tricks.
- (for a trial, election, or competition) Pre-arranged and fixed so that the winner or outcome is decided in advance.
- (typically not comparable) Having the rigging up.