Mixture from vial ko’s an E European (9)

I believe the answer is:

slovakian

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'e european' is the definition.
The definition suggests a singular noun which matches the answer.

'mixture from vial ko's an' is the wordplay.
'mixture from' indicates anagramming the letters.
'vial'+'kos'='vialkos'
'vialkos' anagrammed gives 'slovaki'.
'slovaki'+'an'='SLOVAKIAN'

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