Drink promotion briefly uttered raising cheers (8)
I believe the answer is:
advocaat
'drink' is the definition.
(alcoholic drink)
'promotion briefly uttered raising cheers' is the wordplay.
I cannot quite see how this works, but
'promotion' could be 'ad' (short for advert) and 'ad' is found within the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for advocaat that I've seen before include "Liqueur containing raw eggs" , "Liqueur made from eggs, sugar and brandy" , "Egg-based liqueur" , "Liquer of eggs, sugar and brandy" , "Booze" .)