Tuna mayo sandwiches will be taken to the next level with 1 ingredient found in every shop

When the clock strikes lunchtime and you're hankering for a quick yet delicious bite, a sandwich never disappoints. The possibilities for fillings are virtually limitless, but sometimes, the classics truly hit the spot - like a mouth-watering tuna mayo.

This is one of the simplest sandwich fillings to whip up, requiring no intricate recipe and just a few minutes of your time. However, it can sometimes lack a bit of pizzazz. There is an easy way to spice it up and make it more tasty, and according to culinary experts at Simply Recipes, there's one standout ingredient that can transform your sandwich - and it's readily available in every supermarket.

While additions like cheese, red onion and avocado are commonly used to elevate a tuna mayo, the gurus have revealed a lesser-known tip that can enhance both the taste and texture of your sandwich.

Adding a few salt and vinegar crisps on top of the tuna mayo before sealing the sandwich is a guaranteed way to improve the flavour.

The tangy vinegar kick from the crisps pairs brilliantly with the tuna and soft bread, creating a delightful contrast that tastes significantly better than the filling alone.

If you're looking to take your tuna mayo sandwiches to the next level, a recipe from the New York Times is worth trying. However, simply crumbling a few crisps into your standard tuna mayo mix can do the trick just as well.

"A tuna salad and potato chip sandwich may not be quite as classic a pairing as peanut butter and jelly, but it is, anecdotally, many middle-schoolers' first forays into experimenting with flavors and textures, and no less delicious," notes food writer Kenji Lopez-Alt.

"Beyond crunch, chips also add stability to the sandwich, holding the tuna salad in place as you eat."

Molly Adams of popular food blog Simply Recipes is also a fan of the tuna sandwich innovation.

Reminiscing about popping crisps into sandwiches at school, she shared: "As a child, sandwich day at school was my very favourite. I can still see in my mind's eye the tidy sandwich, crisp pickle, and adorable bag of potato chips on my lunch tray.

"I was the kid who took apart her sandwich to sneak a few crispy potato chips inside. At the time, I felt like I'd reached the peak of culinary innovation, instantly upgrading my turkey, tuna, or chicken salad sandwiches with a pop of saltiness and crunch."