Yes, rob ogre to get unusual fruit (10)
I believe the answer is:
gooseberry
'fruit' is the definition.
(gooseberry is a kind of fruit)
'yes rob ogre to get unusual' is the wordplay.
'yes rob ogre' can be anagrammed to 'GOOSEBERRY'.
But, I am not clear how this is indicated.
Can you help me to learn more?
(Other definitions for gooseberry that I've seen before include "it bears fruit" , "Fruit - unwanted third person" , "Some intruders play it" , "Third-party" , "One unwelcome near passion" .)