Crunch Time: We Put Britain’s Crisps Through a Sandwich Stress Test

Some people take sandwiches seriously. We take them to the point of unnecessary spreadsheets. For the 2026 Flavourz Sandwich-Off, we asked a simple question: which bag of crisps belongs between two slices of bread without ruining the whole operation?

The rules were deliberately boring. Same white sliced loaf. Same salted butter. Same two-slice ratio. One bag of crisps per sandwich, lightly crushed but not obliterated. Each crisp was scored out of 40: crunch (10), flavour bleed (10), structural integrity (10), and sog resistance (10). Crunch had to survive the first bite. Flavour bleed had to season the butter without hijacking it. Structural integrity meant no crisps escaping out the sides like passengers from a badly parked bus. Sog resistance was measured at five minutes and again at ten, because a packed lunch has a timetable.

We tested ten of Britain’s most recognisable bags. The results were salty, crunchy and occasionally upsetting.

The Control Sandwich

White thick-slice bread, lightly buttered, crusts on. No mayo, no lettuce, no heroics. The crisp is the filling and the filling is the point. We pressed each sandwich for ten seconds, cut it in half and ate it over a plate. Any crisp that needed a napkin was noted. Any crisp that needed a solicitor was marked down.

The Relegation Zone

10. Skips — 18/40

Light, airy and absolutely no help in a sandwich. Skips dissolve into a pinkish suggestion of prawn cocktail and leave the bread looking embarrassed. Crunch: minimal. Flavour bleed: chaotic. Structural integrity: none. Sog resistance: Why? Just why? A lovely snack, a terrible sandwich filler.

9. Quavers — 20/40

Same problem, different shape. Quavers are delicious and they know it, but between bread they turn into cheesy air. They do bring a nice savoury note to the butter, but you need half a bag to notice. The sandwich ends up tasting like a rumour of cheese.

8. Wotsits — 22/40

Better than expected, which is not the same as good. The orange dust does season the bread in a way that feels illegal but enjoyable. The crunch disappears almost immediately, though, and the whole thing becomes a soft, cheesy mouthful. Fine for a hangover. Not fine for a ranking.

7. Hula Hoops — 25/40

Structurally fascinating and practically useless. Hula Hoops are tough enough to survive the journey, but they do not so much fill a sandwich as create a series of hard, salty rings. The texture is more obstacle course than lunch. Flavour bleed is decent. Sog resistance is excellent. Enjoyment is debatable.

6. Ready Salted Walkers — 28/40

The safe pair of hands. Ready salted brings crunch and salt without drama. It does not bleed flavour, which means the sandwich tastes mostly of butter and bread with a salty crunch. That is not nothing. It is just not enough. A solid mid-table performance.

5. Prawn Cocktail — 30/40

A controversial entry, and we stand by it. The sweet, vinegary tang cuts through butter beautifully. The crunch holds up for the first few bites. The downside is that the flavour does take over the entire sandwich, and by the end you feel like you have been shouted at by a seafood stall. Good, but loud.

4. Cheese & Onion — 33/40

A proper sandwich crisp. The cheese powder melts into the butter, the onion gives it a savoury edge, and the crunch is reliable. It can get a bit claggy if you overfill, so restraint is required. This is the crisp you take to work when you want your colleagues to know you mean business.

3. Salt & Vinegar — 35/40

Sharp, punchy and brilliant with thick white bread. The vinegar cuts through the butter and makes the whole sandwich taste brighter. The crunch is good, the flavour bleed is excellent, and the sog factor is manageable if you eat it promptly. Do not wrap it in foil and leave it in a bag for three hours. That is not a sandwich, that is a science experiment.

2. McCoy’s Flame Grilled Steak — 37/40

Thick-cut crisps are cheating, and we are happy to be cheated. McCoy’s bring a proper crunch and a deep, savoury flavour that works like a shortcut to a steak sandwich. The structural integrity is excellent. The flavour bleed is strong but not ridiculous. The only issue is that the crisps are so thick they can slide out of the bread if you are not careful. Press firmly.

1. Monster Munch Pickled Onion — 39/40

The champion. Monster Munch are big, crunchy and shaped like they were designed by someone who wanted to cause trouble. Between two slices, they hold their shape, deliver a proper pickled onion hit and season the butter like a dream. The sog resistance is excellent because the crisps are practically armour-plated. The flavour bleed is bold, the crunch is loud, and the sandwich tastes like a dare that worked.

The Final Verdict

If you want a crisp sandwich that behaves, choose Cheese & Onion. If you want one that argues back, choose Salt & Vinegar. If you want the full Flavourz experience — big flavour, proper crunch and a bit of chaos — Monster Munch Pickled Onion is the bag to beat in 2026. Just use thick bread. And maybe a napkin. And definitely not a solicitor.