Fragment wipes tomato sauce (5)

I believe the answer is:

pesto

'sauce' is the definition.
(I know that pesto is a sauce)

'fragment wipes tomato' is the wordplay.
'fragment' indicates a hidden word (I've seen 'fragment of' mean this (I've seen this in other clues)).
'PESTO' is hidden in the letters of 'wipes tomato'.

(Other definitions for pesto that I've seen before include "Basic sauce" , "Sauce of basil, pine nuts and garlic" , "Basil and pine nut sauce" , "Pasta sauce variety" , "Green sauce" .)

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

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