Cut ingredients for rough salsa served up (5)
I believe the answer is:
slash
'cut' is the definition.
(I know that slash is a type of cut)
'ingredients for rough salsa served up' is the wordplay.
'ingredients' says the answer is hidden in the clue (I've seen 'ingredient of' mean this).
'served up' says the letters should be written in reverse (in a down clue, letters go up).
'hsals' can be found hidden inside 'for rough salsa'.
'hsals' back-to-front is 'SLASH'.
(Other definitions for slash that I've seen before include "Reduce (a price) greatly" , "something between a month and a year" , "Punctuation mark" , "Violently cut" , "Oblique stroke" .)