I love unusual fruit (5)
I believe the answer is:
olive
'fruit' is the definition.
(I know that olive is a type of fruit)
'i love unusual' is the wordplay.
'unusual' indicates an anagram.
'i'+'love'='ilove'
'ilove' is an anagram of 'OLIVE'.
(Other definitions for olive that I've seen before include "I love this fruit" , "This branch is offered to show peace" , "Mediterranean tree-fruit, nice in cocktail" , "shades of green" , "Fruit, source of oil" .)