Crossword Genius

When drunk, can siestas help? (10)

Ross

I believe the answer is:

assistance

'help?' is the definition.
('assistance' can be a synonym of 'help')

'when drunk can siestas' is the wordplay.
'when drunk' indicates an anagram (I've seen this in other clues).
'can'+'siestas'='cansiestas'
'cansiestas' is an anagram of 'ASSISTANCE'.

(Other definitions for assistance that I've seen before include "Support" , "Help" , "Aid" .)

I've seen this clue in The Telegraph.
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