Question cook (5)
I believe the answer is:
grill
This clue is a double definition.
'question' is the first definition.
(thesaurus)
'cook' is the second definition.
(grilling is a form of cooking)
(Other definitions for grill that I've seen before include "quiz?" , "what restaurant has to offer?" , "Intensely question; dish" , "Question; cook" , "Cook under a flame" .)