Tidy, not using mixer (4)

I believe the answer is:

neat

I believe this is a double definition.

'tidy' is the first definition.
(synonyms)

'not using mixer' is the second definition.
(as in drinking alcohol neat)

(Other definitions for neat that I've seen before include "Pure" , "In good order, tidy" , "Tidy, well-organised" , "Tidy cattle" , "Spick and span" .)

I've seen this clue in The Times.

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