Take choir cooked vegetable (9)
I believe the answer is:
artichoke
'vegetable' is the definition.
(type of vegetable)
'take choir cooked' is the wordplay.
'cooked' is an anagram indicator (letters cooked into a new form).
'take'+'choir'='takechoir'
'takechoir' with letters rearranged gives 'ARTICHOKE'.
(Other definitions for artichoke that I've seen before include "something to eat" , "See 26" , "something often associated with Jerusalem" , "Plant with edible flower heads" , "Jerusalem or globe?" .)