Cutlet cooked with last of the salad (7)
I believe the answer is:
lettuce
'salad' is the definition.
(I've seen this before)
'cutlet cooked with last of the' is the wordplay.
'cooked with' indicates an anagram (letters cooked into a new form).
'last of' suggests the final letters.
The final letter of 'the' is 'e'.
'cutlet' anagrammed with 'e' can make 'LETTUCE'.
(Other definitions for lettuce that I've seen before include "Salad stuff" , "Basic salad ingredient" , "Lamb's -; iceberg -" , "Salad leaf" , "food" .)