A fairy to quarrel endlessly? It could be the sherry! (8)

I believe the answer is:

aperitif

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'it could be the sherry' is the definition.
The definition suggests a singular noun which matches the answer.

'a fairy to quarrel endlessly?' is the wordplay.
'fairy' becomes 'peri' (Persian mythological being).
'to quarrel' becomes 'tiff' (informal term for an argument).
'endlessly?' means to remove the last letter (I've seen 'endlessly' mean this).
'tiff' with its last letter taken away is 'tif'.
'a'+'peri'+'tif'='APERITIF'

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(Other definitions for aperitif that I've seen before include "appetizer" , "Preprandial drink" , "Pre-meal drink" , "Pre-dinner drink" , "Preprandial tipple" .)

I've seen this clue in The Times.

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