Various roasts cooked by editor (8)
I believe the answer is:
assorted
'various' is the definition.
(synonyms)
'roasts cooked by editor' is the wordplay.
'cooked' is an anagram indicator.
'by' says to put letters next to each other.
'editor' becomes 'ed'.
'roasts' with letters rearranged gives 'assort'.
'assort'+'ed'='ASSORTED'
(Other definitions for assorted that I've seen before include "Motley" , "Containing various different kinds" , "Divers" , "Stared so at a varied mixture as of sweets" , "Various, diverse" .)