The stuff Lenin was made of? (5)

I believe the answer is:

linen

I'm a little stuck... Click here to teach me more about this clue!

'the stuff' is the definition.
(linen is a kind of stuff)

'lenin was made of?' is the wordplay.
'lenin' anagrams to 'LINEN'.
Though, I am not sure how the anagram is indicated.

Can you help me to learn more?

(Other definitions for linen that I've seen before include "Sheets, tablecloth etc." , "Fabric woven from flax fibres" , "Tablecloth material" , "Fine cloth for Lenin" , "Flaxen cloth" .)

I've seen this clue in the Evening Standard.

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