An eccentric minority are busily cleaning fruit (7,6)
I believe the answer is:
lunatic fringe
'an eccentric minority' is the definition.
(I've seen this before)
'busily cleaning fruit' is the wordplay.
'cleaning fruit' anagrams to 'LUNATIC FRINGE'.
Though, I am not sure how this is indicated.
'are' is the link.
Can you help me to learn more?
(Other definitions for lunatic fringe that I've seen before include "Eccentric minority" , "Extreme party members" , "fruitcakes around the edge?" , "Extreme members of group" , "People who support extreme views" .)