Crossword Genius

Group determined to have a drink together? (6)

Ross

I believe the answer is:

teaset

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'drink together?' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.

'group determined to have a' is the wordplay.
'group' becomes 'te' (I can't explain this - if you can you should believe this answer much more).
'determined' becomes 'set' (synonyms).
'to have' is an insertion indicator.
'te'+'set'='teset'
'teset' enclosing 'a' is 'TEASET'.

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I've seen this clue in the Evening Standard.
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