Spooner's child spotted miso ingredient (7)
I believe the answer is:
soybean
'spooner's' is the definition.
Both the definition and answer are singular nouns.
Maybe you can see a link between them that I don't see?
'child spotted miso ingredient' is the wordplay.
I cannot really understand how this works, but
'miso ingredient' could be 'soy' (I've seen this in another clue) and 'soy' is found in the answer.
The remaining letters 'bean' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for soybean that I've seen before include "American vegetable" , "Vegetable source of protein" .)