One of The Greens produced Dublin coddle
I believe the answer is:
side dish
'one of the greens' is the definition.
The definition and answer can be both things that one consumes for nourishment as well as being singular nouns.
Perhaps there's a link between them I don't understand?
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for side dish that I've seen before include "tasty companion?" , "Food item subordinate to the main one" , "Supplementary item at table" , "extra food" , "something extra, of course" .)