On reflection, resisted making coffee (5)
I believe the answer is:
decaf
'coffee' is the definition.
(I've seen this before)
'on reflection resisted' is the wordplay.
'on reflection' is a reversal indicator.
'resisted' becomes 'faced' (I've seen this before).
'faced' written backwards gives 'DECAF'.
'making' acts as a link.
(Other definitions for decaf that I've seen before include "Cup substitute missing kick" , "Non-alcoholic drink" , "Coffee without the kick?" , "Style of coffee" , "Less stimulating coffee?" .)