Crossword Genius

Dressing European celebrity in something dirty (6,7)

Ross

I believe the answer is:

french mustard

'dressing' is the definition.
(type of dressing for food)

'european celebrity in something dirty' is the wordplay.
'european' becomes 'french' (I've seen this before).
'celebrity' becomes 'star' (I've seen this before).
'in' is an insertion indicator.
'something dirty' becomes 'mud'.
'star' going into 'mud' is 'mustard'.
'french'+'mustard'='FRENCH MUSTARD'

I've seen this clue in The Times.
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