Remedy healer used essentially quells hunger pangs (4)
I believe the answer is:
meal
'quells hunger pangs' is the definition.
I can't judge whether this defines the answer.
'remedy healer used essentially' is the wordplay.
'remedy healer' becomes 'mea' (I am not sure about this - if you are sure you should believe this answer much more).
'used' becomes 'old' (similar in meaning).
'essentially' indicates the central letters.
The middle of 'old' is 'l'.
'mea'+'l'='MEAL'
Can you help me to learn more?
(Other definitions for meal that I've seen before include "Powdered grain for dinner say" , "Lame (anag.)" , "Grain ground to powder" , "Breakfast, lunch or dinner" , "Breakfast, lunch, supper" .)