Fresh food endlessly cooked in the main (8)
I believe the answer is:
offshore
'in the main' is the definition.
(I've seen this before)
'fresh food endlessly cooked' is the wordplay.
'endlessly' means to remove the last letter.
'cooked' indicates an anagram (letters cooked into a new form).
'fresh'+'food'='freshfood'
'freshfood' with its final letter taken away is 'freshfoo'.
'freshfoo' anagrammed gives 'OFFSHORE'.
(Other definitions for offshore that I've seen before include "Out to sea, away from land" , "abroad" , "Seaward" , "avoiding tax" , "Situated at sea" .)