Tapas turns out to be Italian food (5)
I believe the answer is:
pasta
'be italian food' is the definition.
(type of Italian food)
'tapas turns out' is the wordplay.
'turns out' indicates an anagram.
'tapas' with letters rearranged gives 'PASTA'.
'to' is the link.
(Other definitions for pasta that I've seen before include "Penne, rigatoni etc" , "Tagliatelle, for example" , "Tapas (anag)" , "Spaghetti, perhaps" , "Eg, spaghetti" .)