Food interfered with on plate (7)
I believe the answer is:
polenta
'food' is the definition.
(I've seen this before)
'interfered with on plate' is the wordplay.
'interfered with' is an anagram indicator.
'on'+'plate'='onplate'
'onplate' with letters rearranged gives 'POLENTA'.
(Other definitions for polenta that I've seen before include "Italian porridge usually of maize" , "Lepanto (anag.)" , "(Dough made with) cornmeal" , "Cornmeal -- on plate (anag)" , "Friulian foodstuff" .)