Some fat in collar done too tightly (4)

I believe the answer is:

lard

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'some fat' is the definition.
(lard is a kind of fat)

'collar done too tightly' is the wordplay.
'LARD' is hidden in amongst the letters.
However, I'm uncertain how the hidden word is indicated.

'in' acts as a link.

Can you help me to learn more?

(Other definitions for lard that I've seen before include "Pig-fat" , "F [FAT]" , "Pork fat" , "Soft white semisolid fat" , "Hard cooking fat" .)

I've seen this clue in the Evening Standard.

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