Enticing berries I still mostly supply (12)
I believe the answer is:
irresistible
'enticing' is the definition.
(thesaurus)
'berries i still mostly supply' is the wordplay.
'mostly' means to remove the last letter (most but not all of the word).
'supply' is an anagram indicator (in a supple way).
'berries'+'i'+'still'='berriesistill'
'berriesistill' with its last letter taken off is 'berriesistil'.
'berriesistil' is an anagram of 'IRRESISTIBLE'.
(Other definitions for irresistible that I've seen before include "Too tempting to be resisted" , "Overpowering" , "Very seductive" .)