Food one sold off (7)
I believe the answer is:
noodles
'food' is the definition.
(I've seen this before)
'one sold off' is the wordplay.
'off' indicates anagramming the letters.
'one'+'sold'='onesold'
'onesold' is an anagram of 'NOODLES'.
(Other definitions for noodles that I've seen before include "Egg pasta; simpletons" , "Oriental pasta" , "Geese" , "Strips of pasta for soup" , "Pasta ribbons" .)