This writer cries out on radio for scoop's content (3,5)
I believe the answer is:
ice cream
'this' is the definition.
The definition suggests a singular noun which matches the answer.
'writer cries out on radio for scoop's content' is the wordplay.
I cannot really see how this works, but
'writer' could be 'i' (the person who is writing these clues) and 'i' is found in the answer.
'on' could be 're' ('on' can be mean 'with reference to') and 're' is found within the answer.
'content' could be 'am' (AM is an example) and 'am' is located in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for ice cream that I've seen before include "Dish" , "Cold snack" , "Frozen desert" , "Frozen food made with milk fat" , "Hot day treat" .)