Food pigs hate scattered across interior of sty (9)
I believe the answer is:
spaghetti
'food' is the definition.
(spaghetti is a kind of food)
'pigs hate scattered across interior of sty' is the wordplay.
'scattered' indicates anagramming the letters.
'across' means one lot of letters goes inside another.
'interior of' indicates the central letters.
The middle letter of 'sty' is 't'.
'pigs'+'hate'='pigshate'
'pigshate' with letters rearranged gives 'spagheti'.
'spagheti' going around 't' is 'SPAGHETTI'.
(Other definitions for spaghetti that I've seen before include "A dish from the gas-pit" , "Strings of pastas" , "motorway interchange" , "Pasta in long strips" , "It's past eight, time for strange pasta" .)