Pancake mixture in buffet (6)
I believe the answer is:
batter
This clue is a double definition.
'pancake mixture' is the first definition.
(I've seen this before)
'buffet' is the second definition.
(synonyms)
'in' acts as a link.
(Other definitions for batter that I've seen before include "Strike with hard blows" , "Fritter coating" , "Mixture of flour, eggs and milk, used in cooking" , "Make crisp and brown" , "Beat heavily" .)