Crossword Genius

Stash away in the cellar? (4)

Ross

I believe the answer is:

salt

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'cellar?' is the definition.
Although both the answer and definition are singular nouns, I don't understand how one could define the other.

'stash away in the' is the wordplay.
'stash' becomes 'sl' (I can't explain this - if you can you should give a lot more credence to this answer).
'away' becomes 'A' (abbreviation as used in sports fixtures).
'in' is an insertion indicator.
'the' becomes 't' (the is pronounced as a 't' sound in some dialects).
'sl' placed around 'a' is 'sal'.
'sal'+'t'='SALT'

Can you help me to learn more?

(Other definitions for salt that I've seen before include "Brackish" , "Condiment - experienced sailor" , "dry wit" , "Liveliness" , "Preserve" .)

I've seen this clue in the Evening Standard.
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