macaroni's partner (6)
I believe the answer is:
cheese
'macaroni's partner' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for cheese that I've seen before include "Eg, cheddar" , "Food from the pressed curd of milk" , "Wensleydale, Stilton etc" , "Edam or cheddar, say" , "Kitchen utensil" .)