Crossword Genius

Artist may use this daily fuel (8)

Ross

I believe the answer is:

charcoal

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'artist may use this' is the definition.
The definition suggests a singular noun which matches the answer.

'daily fuel' is the wordplay.
'daily' becomes 'char' (both can mean a cleaner).
'fuel' becomes 'coal' (coal is a kind of fuel).
'char'+'coal'='CHARCOAL'

Can you help me to learn more?

(Other definitions for charcoal that I've seen before include "It's used in drawing and barbecues" , "Dark grey colour" , "Artist's black material" , "Black fuel made from wood, good for barbecues (8)" , "Black residue of burnt wood" .)

I've seen this clue in The Guardian.
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