Material that, alas, the alsatians chewed up (5)

I believe the answer is:

satin

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'material' is the definition.
(satin is a kind of material)

I can't explain the rest of the clue.

(Other definitions for satin that I've seen before include "Fine material" , "Stain found in cloth" , "Stain on shiny fabric" , "Silky material" , "Lustrous fabric" .)

I've seen this clue in the Evening Standard.

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