Chicken dish I've cooked with stock finally (4)
I believe the answer is:
kiev
'chicken dish' is the definition.
'i've cooked with stock finally' is the wordplay.
'cooked with' indicates anagramming the letters.
'finally' suggests the final letters.
The final letter of 'stock' is 'k'.
'ive' with its letters anagrammed with 'k' gives 'KIEV'.
(Other definitions for kiev that I've seen before include "Ukraine's largest city" , "Capital of 13 down" , "Ukrainian capital" , "Capital city of the Ukraine" , "Ukraine's capital - way of cooking chicken" .)