What some of the Eskimos do with milk? (4)

I believe the answer is:

skim

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'milk?' is the definition.
(skim milk is a kind of milk)

'what some of the eskimos do' is the wordplay.
'SKIM' is hidden within the letters.
But, I am uncertain how the hidden word is indicated.

'with' is the link.

Can you help me to learn more?

(Other definitions for skim that I've seen before include "Read hastily" , "Glide lightly over" , "Remove (or move close to) liquid surface" , "Move quickly (over a surface)" , "Bounce (a stone) over water" .)

I've seen this clue in the Evening Standard.

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