Food found in shop, as tagliatelle! (5)
I believe the answer is:
pasta
'food' is the definition.
(pasta is a kind of food)
'in shop as tagliatelle' is the wordplay.
'in' indicates a hidden word.
'PASTA' can be found hidden inside 'shop as tagliatelle'.
'found' is the link.
(Other definitions for pasta that I've seen before include "Linguine, e.g." , "shells, perhaps" , "Dish of dough made with durum wheat" , "Dried flour paste, staple in Italian food" , "eg Tortellini" .)