Put oil on an eel that has been prepared (5)

I believe the answer is:

anele

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'put oil' is the definition.
'anele' can be an answer for 'oil' (I've seen this in another clue). I'm unsure of the 'put' bit.

'on an eel that has been prepared' is the wordplay.
'on' is a charade indicator (letters next to each other).
'that has been prepared' is an anagram indicator.
'eel' is an anagram of 'ele'.
'an'+'ele' is 'ANELE'.

Can you help me to learn more?

(Other definitions for anele that I've seen before include "Anoint" , "Administer extreme unction" , "Embrocate" , "Give religious blessing to" .)

I've seen this clue in The Globe and Mail.

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