A contemptuous person imbibing what alcohol is sold here (8)
I believe the answer is:
alehouse
'alcohol is sold here' is the definition.
'a contemptuous person imbibing what' is the wordplay.
'contemptuous person' becomes 'louse'.
'imbibing' means one lot of letters goes inside another.
'what' becomes 'eh' (I've seen this in other clues).
'louse' placed around 'eh' is 'lehouse'.
'a'+'lehouse'='ALEHOUSE'
(Other definitions for alehouse that I've seen before include "Old pub" , "old tavern" , "Inn" , "drinks here?" , "the nineteenth?" .)