Get this cooked: old man coming in for food (9)
I believe the answer is:
spaghetti
'food' is the definition.
(spaghetti is a kind of food)
'get this cooked old man coming in' is the wordplay.
'cooked' indicates an anagram.
'old man' becomes 'pa' (both can mean father).
'coming in' means one lot of letters goes inside another.
'get'+'this'='getthis'
'getthis' with letters rearranged gives 'sghetti'.
'sghetti' enclosing 'pa' is 'SPAGHETTI'.
'for' acts as a link.
(Other definitions for spaghetti that I've seen before include "Long thin pasta" , "A dish from the gas-pit" , "The gas tip can produce a pasta" , "Stringed pasta" , "involving a fork and many turnings?" .)