Couple drinking pub’s Australian beer (6)

I believe the answer is:

tinnie

'australian beer' is the definition.
(Australian term for a can of beer)

'couple drinking pub's' is the wordplay.
'couple' becomes 'tie' (both can mean to join).
'drinking' is an insertion indicator (inserted letters are consumed or drunk).
'pub' becomes 'inn' (an inn is a type of pub).
'tie' enclosing 'inn' is 'TINNIE'.

(Another definition for tinnie that I've seen is " Can of beer to 23dn".)

I've seen this clue in The Times.

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