Cheek served up on gold dish (5)
I believe the answer is:
pilau
'dish' is the definition.
(pilau is a kind of dish)
'cheek served up on gold' is the wordplay.
'cheek' becomes 'lip' (both can mean insolence or rudeness).
'served up' is a reversal indicator.
'on' is a charade indicator (letters next to each other).
'gold' becomes 'au' (Au is the chemical symbol for gold).
'lip' in reverse letter order is 'pil'.
'pil'+'au'='PILAU'
(Other definitions for pilau that I've seen before include "Exotic dish" , "Rice seasoned with spices and cooked with meat or vegetables" , "Eastern food" , "Rice cooked in seasoned broth" , "Indian rice recipe" .)