Like custard (4)
I believe the answer is:
eggy
'like custard' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for eggy that I've seen before include "Like part of breakfast" , "like soldiers retreating from shells?" , "Yellow" , "Soaked in hens' produce" , "with a sulphurous niff?" .)