Crossword Genius

It's a flipping fizzy wine (4)

Ross

I believe the answer is:

asti

'fizzy wine' is the definition.
(I've seen this before)

'it's a flipping' is the wordplay.
'flipping' is a reversal indicator.
'its'+'a'='itsa'
'itsa' in reverse letter order is 'ASTI'.

(Other definitions for asti that I've seen before include "Italian wine - (then change a letter for ...)" , "- spumante, It. wine" , "Italian 'sparkler'" , "18" , "Piedmontese white wine" .)

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