Food giving a chap toil when cooking (9)
I believe the answer is:
chipolata
'food' is the definition.
(type of sausage)
'a chap toil when cooking' is the wordplay.
'when cooking' indicates an anagram (cook can mean to manipulate or distort).
'a'+'chap'+'toil'='achaptoil'
'achaptoil' with letters rearranged gives 'CHIPOLATA'.
'giving' is the link.
(Other definitions for chipolata that I've seen before include "Party snack" , "banger" , "Small thin sausage" , "Type of sausage" .)