Crossword Genius

Tavern sandwiches, one bagel, delicious for new listener (6,3)

Ross

I believe the answer is:

bionic ear

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'new listener' is the definition.
(prosthetic which lets the wearer listen to things)

'tavern sandwiches one bagel delicious' is the wordplay.
'tavern' becomes 'bar' (I've seen this in another clue).
'sandwiches' is an insertion indicator (to sandwich is to block something in).
'one' becomes 'I' (Roman numeral).
'bagel delicious' becomes 'onice' (I can't explain this - if you can you should give a lot more credence to this answer).
'i'+'onice'='ionice'
'bar' going around 'ionice' is 'BIONIC EAR'.

'for' is the link.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.
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