Anise-flavoured French aperitif (6)

I believe the answer is:

pastis

(Other definitions for pastis that I've seen before include "Aniseed-flavoured aperitif" , "Aniseed-flavour aperitif" , "Rectangular" , "Alcoholic drink flavoured with aniseed" , "Aniseed aperitif" .)

I've seen this clue in The Guardian.

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