Intentional spoiling of edible tea - right! (10)
I believe the answer is:
deliberate
'intentional' is the definition.
(I know that intentional can be written as deliberate)
'of edible tea right' is the wordplay.
'of' is an anagram indicator (the answer comes from or 'of' the letters).
'right' becomes 'r' (common abbreviation).
'edible'+'tea'+'r'='edibletear'
'edibletear' is an anagram of 'DELIBERATE'.
'spoiling' acts as a link.
I am not very happy about this link. It may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for deliberate that I've seen before include "Intentional; think carefully" , "Done intentionally" , "on purpose" , "Planned" , "study" .)