Citron mixed with water in French drink (9)

I believe the answer is:

cointreau

'drink' is the definition.
(type of liqueur)

'citron mixed with water in french' is the wordplay.
'mixed' indicates anagramming the letters.
'with' means one lot of letters go next to another.
'water in french' becomes 'eau' (I've seen this in another clue).
'citron' is an anagram of 'cointr'.
'cointr'+'eau'='COINTREAU'

(Other definitions for cointreau that I've seen before include "Alcoholic drink" , "Orange liqueur" , "Sweet orange-flavoured colourless liqueur" , "A sweet orange-flavoured liqueur for cautioner" .)

I've seen this clue in The Everyman puzzle in The Observer.

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