Cheese -- it can form white layer (3,5)

I believe the answer is:

ice sheet

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'form white layer' is the definition.
The definition suggests a singular noun which matches the answer.

'cheese it can' is the wordplay.
'can' indicates an anagram (I've seen 'canned' mean this (canned can mean drunk)).
'cheese'+'it'='cheeseit'
'cheeseit' is an anagram of 'ICE SHEET'.

Can you help me to learn more?

(Other definitions for ice sheet that I've seen before include "Extensive frozen layer over land" , "white surface layer" , "Extensive frozen area" .)

I've seen this clue in The Sun and The Telegraph.

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