Drunk poteen mix that's not subject to taxes, for instance (9)
I believe the answer is:
exemption
'not subject to taxes for instance' is the definition.
I can't tell whether this definition defines the answer.
'drunk poteen mix' is the wordplay.
'drunk' indicates an anagram.
'poteen'+'mix'='poteenmix'
'poteenmix' with letters rearranged gives 'EXEMPTION'.
'that's' is the link.
Can you help me to learn more?
(Other definitions for exemption that I've seen before include "Discharge" , "Freedom from liability" , "Freedom from, eg, taxes" , "Freedom (from, eg, tax)" , "A release from, eg, tax liability" .)