Cream egg originally with fewer calories? (5)
I believe the answer is:
elite
'cream' is the definition.
(as in the cream of the crop)
'egg originally with fewer calories?' is the wordplay.
'originally' suggests taking the first letters.
'with fewer calories?' becomes 'lite' (I've seen this before).
The first letter of 'egg' is 'e'.
'e'+'lite'='ELITE'
(Other definitions for elite that I've seen before include "Superior or favoured group of people" , "Chosen ones" , "High society" , "Exclusive group" , "A privileged or superior social group" .)