Gave plaster to journalist (8)
I believe the answer is:
rendered
'gave' is the definition.
(rendering is a kind of giving)
'plaster to journalist' is the wordplay.
I cannot really understand how this works, but
'journalist' could be 'ed' (short for editor) and 'ed' is located in the answer.
The remaining letters 'render' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for rendered that I've seen before include "Melted down fat or gave performance" , "Gave - returned" , "Caused to become" , "Got fat from" , "Provided, given" .)