They're shameless producing beer as port (10)

I believe the answer is:

reprobates

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'they're shameless' is the definition.
The definition suggests an adverb but the answer is not.

'producing beer as port' is the wordplay.
'producing' is an anagram indicator.
'beer'+'as'+'port'='beerasport'
'beerasport' with letters rearranged gives 'REPROBATES'.

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(Other definitions for reprobates that I've seen before include "those accused of patronising loose women?" , "Shameless people" , "Rogues" .)

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

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