Fellow gets top award for vegetable (7)
I believe the answer is:
mangold
'vegetable' is the definition.
(mangold is a kind of vegetable)
'fellow gets top award' is the wordplay.
'fellow' becomes 'man' (fellow can mean a man).
'gets' is a charade indicator (letters next to each other).
'top award' becomes 'gold' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'man'+'gold'='MANGOLD'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for mangold that I've seen before include "Beet used to feed stock" , "Root" , "vegetable" .)