Take choir trip to Jerusalem, say (9)
I believe the answer is:
artichoke
'to jerusalem say' is the definition.
(Jerusalem artichoke is a type of artichoke)
'take choir trip' is the wordplay.
'trip' indicates an anagram.
'take'+'choir'='takechoir'
'takechoir' anagrammed gives 'ARTICHOKE'.
(Other definitions for artichoke that I've seen before include "Jerusalem, perhaps" , "Plant with edible flower heads" , "something often associated with Jerusalem" , "Thistle-like plant with edible heads" , "globe, for example" .)