Improvise some food (6)
I believe the answer is:
noodle
This clue is a double definition.
'improvise' is the first definition.
(noodle can mean to musically improvise)
'some food' is the second definition.
(noodle is a kind of food)
(Other definitions for noodle that I've seen before include "Blockhead" , "Fool (in the soup?)" , "Idiot" , "Thin strand of pasta" , "Simple person - in the soup?" .)