Jelly and cream shortly after seeing that (5)
I believe the answer is:
aspic
'jelly' is the definition.
(I know that aspic is a type of jelly)
'cream shortly after seeing that' is the wordplay.
'cream' becomes 'pick' (both can mean the best of something).
'shortly' means to remove the last letter.
'after' says to put letters next to each other.
'seeing that' becomes 'as' (I've seen this in other clues).
'pick' with its final letter removed is 'pic'.
'pic' put after 'as' is 'ASPIC'.
'and' acts as a link.
(Other definitions for aspic that I've seen before include "Savoury jelly used to coat eggs etc" , "Savoury jelly for coating meats and eggs" , "Ending of Marlowe's thriller" , "Lavender" , "Savoury relish" .)