Duplicate a Japanese tea (6)

I believe the answer is:

matcha

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'japanese tea' is the definition.
I don't know anything about this answer so I can't tell whether this works.

'duplicate a' is the wordplay.
'duplicate' becomes 'match' (match is a kind of duplicate).
'match'+'a'='MATCHA'

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

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