Journey to the end of the line for food (5)
I believe the answer is:
tripe
'food' is the definition.
(tripe is a kind of food)
'journey to the end of the line' is the wordplay.
'journey' becomes 'trip' (trip is a kind of journey).
'to the end of' indicates one should take the final letters.
The final letter of 'line' is 'e'.
'trip'+'e'='TRIPE'
'for' is the link.
(Other definitions for tripe that I've seen before include "Garbage" , "Rubbish - it's ox stomach linings" , "Ox stomach as food - it's nonsense" , "Rubbish (colloq.)" , "Lining of the stomach of a cow as food" .)