Pollies that are good in the diet! (6)
I believe the answer is:
greens
'the diet' is the definition.
The definition and answer can be both things that one consumes for nourishment as well as being singular nouns.
Perhaps you can see a link between them that I don't see?
'pollies that are good' is the wordplay.
I cannot really understand how this works, but
'good' could be 'g' (abbreviation) and 'g' is found within the answer.
The remaining letters 'reens' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'in' is the link.
Can you help me to learn more?
(Other definitions for greens that I've seen before include "Ecology party" , "They're for putting on - vegetables" , "Nature lovers" , "Colours" , "food" .)