Drink to best dairy product (6,5)

I believe the answer is:

double cream

'dairy product' is the definition.
(double cream is a kind of dairy product)

'drink to best' is the wordplay.
'drink' becomes 'double' (double shot of alcohol).
'to best' becomes 'cream' (as in 'the cream of the crop').
'double'+'cream'='DOUBLE CREAM'

(Another definition for double cream that I've seen is " fat and thick".)

I've seen this clue in The Mirror.

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