Tried firs chopped up and cooked (4-5)
I believe the answer is:
stir-fried
'cooked' is the definition.
(stir-frying is a type of cooking)
'tried firs chopped up' is the wordplay.
'chopped up' indicates an anagram.
'tried'+'firs'='triedfirs'
'triedfirs' with letters rearranged gives 'STIR-FRIED'.
'and' acts as a link.
(Other definitions for stir-fried that I've seen before include "Drifter is attracted to food whisked in pan" , "Cooked by whisking rapidly in hot pan" , "Drifter is given food cooked and whisked in pan" , "Cooked in oil while mixing briskly" , "Cooked in a wok" .)