Tastier drink, reportedly a delicacy (6)
I believe the answer is:
nicety
'delicacy' is the definition.
(thesaurus)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for nicety that I've seen before include "A detail of etiquette" , "Delicacy" , "Exactitude" , "Subtle point of distinction" , "shade?" .)