Trout cooked a certain way for teacher (5)

I believe the answer is:

tutor

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'for teacher' is the definition.
(tutor is a kind of teacher)

'trout cooked a certain way' is the wordplay.
'trout' anagrams to 'TUTOR'.
Though, I am unsure how the anagram is indicated.

Can you help me to learn more?

(Other definitions for tutor that I've seen before include "Give individual instruction" , "He shows us the way" , "Individual teacher" , "class leader" , "Trout (anag)" .)

I've seen this clue in The Daily Express.

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