Mike joins two Europeans devouring Zulu appetiser (4)
I believe the answer is:
meze
'appetiser' is the definition.
(Middle Eastern appetiser)
'mike joins two europeans devouring zulu' is the wordplay.
'mike' becomes 'M' (phonetic alphabet: alpha, bravo, charlie etc.).
'joins' is a charade indicator (letters next to each other).
'two europeans' becomes 'EE' (abbreviation for 'European' written twice).
'devouring' is an insertion indicator.
'zulu' becomes 'Z' (phonetic alphabet: alpha, bravo, charlie etc.).
'ee' placed around 'z' is 'eze'.
'm'+'eze'='MEZE'
(Other definitions for meze that I've seen before include "Mediterranean snacks" , "Mediterranean dishes" , "Greek appetiser" , "Mediterranean appetisers" , "Greek or Turkish starter selection" .)