It doesn't take a scientist to understand why a crisp butty is so delicious - with the soft filling of a sandwich complimented perfectly by the crunchy flavoured potatoes.
Now food scientists have reviewed the flavour compounds in sandwich fillings and crisps to reveal the top ten tastiest crisp sandwich combinations.
The top pairings were examined by leading food scientist Dr Stuart Farrimond at the University of Chester for a study commissioned by Subway and Walkers.