Boiled tripe provided after a drink to whet the appetite (8)
I believe the answer is:
aperitif
'drink to whet the appetite' is the definition.
(I've seen this before)
'boiled tripe provided after a' is the wordplay.
'boiled' indicates an anagram.
'provided' becomes 'if' (**).
'after' says to put letters next to each other.
'tripe' anagrammed gives 'perit'.
'perit'+'if'='peritif'
'peritif' after 'a' is 'APERITIF'.
(Other definitions for aperitif that I've seen before include "Alcoholic drink before a meal, like sherry" , "Drink stimulating the appetite" , "appetizer" , "Preprandial drink" , "Alcoholic drink to stimulate appetite" .)