Tripe spoiled a starter of liver (5)
I believe the answer is:
offal
'tripe' is the definition.
(I've seen this before)
'spoiled a starter of liver' is the wordplay.
'spoiled' becomes 'off' (I've seen this in another clue).
'starter of' says to take the initial letters.
The first letter of 'liver' is 'l'.
'off'+'a'+'l'='OFFAL'
(Other definitions for offal that I've seen before include "Less valuable edible parts of animal" , "Rejected parts of a carcase" , "Bits of waste meat" , "Less edible parts of animal, entrails and organs" , "Liver, kidney, etc, as food" .)