Feat, organising dairy export (4)
I believe the answer is:
feta
'dairy export' is the definition.
'feat organising' is the wordplay.
'organising' is an anagram indicator.
'feat' is an anagram of 'FETA'.
(Other definitions for feta that I've seen before include "Greek salad cheese" , "Salty Greek cheese" , "Greek 8 across" , "Soft Greek cheese" , "10 down cheese" .)