No can opener, no panic: this survival tip will save you more than one dinner party!

Monday 10 November 2025 15:30 - Adèle Peyches
No can opener, no panic: this survival tip will save you more than one dinner party!

You're hungry, you've got a can of food on hand... but no can opener?

Between the tuna stuck in the can and the green beans you can't reach, you're in for a real treat. Fortunately, there are several ingenious and safe methods for opening cans without a special tool. Some require a little patience, others a little strength, but they all have one thing in common: they work!


Why it's possible

Before unsheathing the spoon or knife, it's important to understand how a tin can is made. The lid is crimped onto the body of the can: the most fragile part is therefore located at the junction between the rim and the lid, where the metal is folded.

➡️ The aim is not to "pierce" the can, but to gently break the weld. Once this entry point has been created, simply lift the lid gradually.

The secret is precision. No need for a hammer or superhuman strength: a little method is all it takes to transform an ordinary utensil into an improvised can opener.

The spoon, the safest (and cleverest) method

It's the preferred survival technique of campers and students alike.

✔️ It requires no sharp tools, and works with a simple, sturdy metal spoon.

How to do it:

  • Place the can on a stable, flat surface.
  • Hold the spoon firmly, hollow towards you.
  • Position the rounded edge of the spoon on the inside groove of the lid.
  • Rub vigorously back and forth, always in the same place.
  • After 30 to 60 seconds, the metal will weaken: a small hole will form.
  • Then slide the spoon into the opening and lever around the rim to lift the lid.

➡️ It takes a little time, but it works like a charm. And best of all, there's no risk of cuts.

The kitchen knife, express method (but be careful!)

If you have a sturdy knife with a thick blade (chef's, survival or butcher's knife), you can use it to pierce the lid.

How to do it:

  • Place the can on a stable board or surface.
  • Place the tip of the knife about a centimetre from the inside edge of the lid.
  • Use the palm of your hand or a sharp utensil (not too hard!) to give it a little jab.
  • Once the blade has been inserted, gently pry it open.
  • Move the blade gradually around the lid to lift it.

✔️ It's quick and efficient.

❌ Caution, however: never use a thin knife or one with a flexible blade (butter knife type), as it may slip and cause injury.

Tip: always keep the cutting edge facing away from you.

The "makeshift workshop" version of the screwdriver and hammer

No can opener, but a toolbox? Perfect.

The screwdriver + hammer duo reproduces almost the same effect as a classic can opener.

How to use:

  • Lay the can flat.
  • Place the tip of the screwdriver on the inside edge of the lid.
  • Give the hammer (or other heavy object) a short, sharp blow to pierce the metal.
  • Gradually advance along the rim and repeat.
  • Once complete, the lid will lift off easily.

➡️ This is the cleanest method, ideal if you're at home.

✔️ It won't deform the can, and limits splattering.

Stone or concrete, the "outdoor survival" method

Whether you're hiking, camping or moving house, this technique is your ally.

No tools required: just a little common sense and a rough surface.

How to do it:

  • Find a flat stone, sidewalk or concrete slab.
  • Turn the can upside down.
  • Rub it vigorously on the surface for 20 to 40 seconds.
  • The friction will wear away the lid's fine weld.
  • When you see liquid escaping, stop: the seal has broken.
  • Squeeze the sides of the can or insert a spoon to lift the lid.

✔️ Free and effective method, even without equipment.

❌ To be done outside: splashes are inevitable.

A few essential precautions

➡️ Stability first: a slippery box can quickly become dangerous.

➡️ Avoid fragile tools: a sturdy spoon is better than a thin knife.

➡️ Protect your hands: metal edges are sharp. Use a cloth, tea towel or gloves.

➡️ Never strike hard: there's no need to "pierce", as this only weakens the weld.

Once you've opened the can, discard the lid immediately to prevent cuts.

Then transfer the contents to a bowl or airtight container before tasting.

In a nutshell

✔️ Yes, you can open cans without a can opener.

✔️ The most practical solutions: the spoon (safety), the knife (speed), the stone (survival).

✔️ The important thing: work on the edge, not in the middle, and keep calm.

Next time you're faced with a stubborn box, remember: you don't have to be MacGyver, just a little resourceful! And who knows? Maybe you'll end up a picnic hero.

Adèle PeychesAdèle Peyches
Editorial manager who just can't wait for winter to enjoy fondue! Passionate about gastronomy and always on the lookout for new culinary gems, I first studied law before returning to my first love: the taste of good products and the joy of sharing around the table :)

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