Do too much in Ulster, say — it's fine for a time (8)
I believe the answer is:
overcook
'do too much' is the definition.
(I've seen this before)
'ulster say it's fine for a time' is the wordplay.
I cannot really see how this works, but
'fine' could be 'ok' (synonyms) and 'ok' is present in the answer.
'it' could be 'e' ('e' can mean 'electronic' which is similar to 'IT') and 'e' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
'in' acts as a link.
Can you help me to learn more?
(Other definitions for overcook that I've seen before include "Char" , "Do too much" , "Make a bad hash" .)