Food for about five I need to cook (6)
I believe the answer is:
endive
'food' is the definition.
(endive is a kind of food)
'about five i need to cook' is the wordplay.
'about' means one lot of letters goes inside another.
'five' becomes 'V' (Roman numeral).
'to cook' is an anagram indicator.
'i'+'need'='ineed'
'ineed' with letters rearranged gives 'endie'.
'v' inserted into 'endie' is 'ENDIVE'.
'for' is the link.
(Other definitions for endive that I've seen before include "Portion of salad" , "Chicory-type salad vegetable" , "Type of chicory" , "Plant used in salads" , "Salad plant with crisp curly leaves" .)