Enrage Pole, generating zest (6,4)
I believe the answer is:
orange peel
'zest' is the definition.
(I've seen this in another clue)
'enrage pole generating' is the wordplay.
'generating' indicates an anagram.
'enrage'+'pole'='enragepole'
'enragepole' is an anagram of 'ORANGE-PEEL'.
(Other definitions for orange peel that I've seen before include "Bit of fruit" , "Rind often candied" , "Pithy stuff" .)