Use white liquid (4)

I believe the answer is:

milk

This clue is a double definition.

'use' is the first definition.
(I've seen this before)

'white liquid' is the second definition.
(I've seen this before)

(Other definitions for milk that I've seen before include "Dairy product" , "White liquid" , "Source of cream/butter" , "Exploit" , "Use" .)

I've seen this clue in The Times.

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