Incessantly consumed, extremely sour (2,5,4)

I believe the answer is:

at every turn

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'incessantly' is the definition.
I know nothing about this answer so I can't tell whether this works.

'consumed extremely sour' is the wordplay.
'consumed' becomes 'ate' (to eat is to consume food).
'extremely' becomes 'very' (very can mean extremely or considerably).
'sour' becomes 'turn' (synonyms).
'ate'+'very'+'turn'='AT EVERY TURN'

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I've seen this clue in The Everyman puzzle in The Observer.

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