Snack item (8)
(Other definitions for sandwich that I've seen before include "Snack food" , "Snack - town in Kent" , "it's easy to scoff" , "Snack - place in Kent" , "Picnic food" .)
(Other definitions for scotch egg that I've seen before include "Savoury snack" , "Picnic food" , "It is encased in sausage meat" , "It is enclosed in sausage meat" , "Snack, mostly breaded sausage meat" .)