Prepared to stir old Italian food (7)
I believe the answer is:
risotto
'italian food' is the definition.
(I've seen this before)
'prepared to stir old' is the wordplay.
'prepared' is an anagram indicator.
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'to'+'stir'='tostir'
'tostir' with letters rearranged gives 'risott'.
'risott'+'o'='RISOTTO'
(Other definitions for risotto that I've seen before include "It has roots in Italian rice-based dish" , "dishy thing!" , "Perhaps Italian" , "F" , "You cook it in stock" .)