Cook an organic meal involving two countries (5-8)
I believe the answer is:
anglo-american
'involving two countries' is the definition.
(I've seen this before)
'cook an organic meal' is the wordplay.
'cook' indicates anagramming the letters.
'an'+'organic'+'meal'='anorganicmeal'
'anorganicmeal' with letters rearranged gives 'ANGLO-AMERICAN'.
(Other definitions for anglo-american that I've seen before include "UK-US" , "Englishman settled in New York, perhaps" .)