Crossword Genius

Oil plant for the ultimate in cider vinaigrette dressing? (8)

Ross

I believe the answer is:

refinery

I'm a little stuck... Click here to teach me more about this clue!

'oil plant' is the definition.
(I've seen this in another clue)

'ultimate in cider vinaigrette dressing?' is the wordplay.
'ultimate in' indicates one should take the final letters.
'dressing?' becomes 'finery' (I am not sure about this - if you are sure you should believe this answer much more).
The final letters of 'cider vinaigrette' are 're'.
're'+'finery'='REFINERY'

'for the' acts as a link.

Can you help me to learn more?

(Other definitions for refinery that I've seen before include "Industrial installation where a substance is purified" , "Where oil is processed" , "Purification plant" , "Factory which removes impurities etc from crude substances" , "Industrial processing plant (for, eg, oil)" .)

I've seen this clue in the Sydney Morning Herald.
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