Audibly demonstrates contempt for sauce (5)
I believe the answer is:
booze
'sauce' is the definition.
(I've seen this before)
'audibly demonstrates contempt' is the wordplay.
'audibly demonstrates' shows a homophone (sound like).
'contempt' becomes 'boos' (people saying 'boo').
'boos' is a homophone of 'BOOZE'.
'for' is the link.
(Other definitions for booze that I've seen before include "Alcohol (sl.)" , "Alcoholic drink generally" , "plonk?" , "Intoxicating liquor" , "Drink to excess (colloq.)" .)