Discover charred remains in this? (3)

I believe the answer is:

urn

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'remains in this?' is the definition.
The definition suggests a singular noun which matches the answer.

'discover charred' is the wordplay.
'discover' means to look at the middle letters (I've seen 'discovered' mean this (dis-covered - outer letters removed)).
'charred' becomes 'burnt' (I've seen this in another clue).
The middle letters of 'burnt' are 'URN'.

Can you help me to learn more?

(Other definitions for urn that I've seen before include "Funerary vessel" , "tea maker" , "Large pot for making tea" , "Pot for human ashes" , "Pitcher" .)

I've seen this clue in The Telegraph.

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