Crossword Genius

Turn ale out that’s indifferent (7)

Ross

I believe the answer is:

neutral

'indifferent' is the definition.
(I know that indifferent can be written as neutral)

'turn ale out' is the wordplay.
'out' indicates anagramming the letters (out can mean wrong or inaccurate).
'turn'+'ale'='turnale'
'turnale' anagrammed gives 'NEUTRAL'.

'that's' acts as a link.

(Other definitions for neutral that I've seen before include "Renault altered" , "Impartial; plug wire" , "Lacking a preference" , "Indifferent; not in gear" , "Non-partisan in Renault" .)

I've seen this clue in The Mirror.
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