Dog raves after fruit (8)
I believe the answer is:
currants
'dog raves after fruit' is the definition.
I can't judge whether this definition defines the answer.
'dog raves after' is the wordplay.
'dog' becomes 'cur' (both can mean a despicable person).
'raves' becomes 'rants' ('rant' can be a synonym of 'rave').
'after' is a charade indicator (letters next to each other).
'cur'+'rants'='CURRANTS'
Can you help me to learn more?
(Other definitions for currants that I've seen before include "Dry seedless grapes" , "Small, dried, seedless raisins" , "Dried fruit" , "Dried black grapes" , "Small dried fruits used in baking" .)