With this in mind, then: always eat your Mini Cheddars before or after your crisp sandwich, but please never put them inside it.

Pringles

They crunch, sure, but that unique Pringle shape – so well suited to parties and picnics – is deceptively dangerous in a crisp sandwich. Why? Because it’s got serious shatter-potential. And nobody wants to bite down into a tasty bap and get their gums speared by a shard of Sour Cream or Texas BBQ now, do they?

Hula Hoops

Delicious but, as above, there is a heightened risk of injury when you bite down on a butty filled with Hula Hoops. Proceed with caution…

Frazzles

They taste like bacon, if you’ve never tried bacon before, so consider this your alternative filling for a very low-key bacon sandwich. Just be sure to eat it licketty-split: like so many others before them, Frazzles have the potential to turn to mush if they sit in butter for too long…

Doritos

I love Doritos as much as the next person (the Chilli Heatwave variety is basically a cupboard staple in my kitchen), but there’s something a little off about them in a sandwich. Especially if you let said sandwich sit for a while before chowing down on it. Think something simultaneously soft and hard, all at once, like an ever-so-slightly-out-of-date biscuit. All in all, a very unsatisfying crisp sarnie experience. Use these guys for scooping salsa and leave it at that, yeah?

The UK’s best crisps, as ranked by their suitability for a crisp sandwich