Crossword Genius

Excellent oil used for mayonnaise (5)

Ross

I believe the answer is:

aioli

'mayonnaise' is the definition.
(mayonnaise seasoned with garlic)

'excellent oil used' is the wordplay.
'excellent' becomes 'ai' (resembles 'A1', old-fashioned term for excellent).
'used' is an anagram indicator.
'oil' anagrammed gives 'oli'.
'ai'+'oli'='AIOLI'

'for' acts as a link.

(Other definitions for aioli that I've seen before include "Mayo, in part?" , "mayonniase" , "garlic sauce" , "Pungent sauce" , "Garlic mayo" .)

I've seen this clue in The Daily Express.
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