How to open canned food without a tin opener

We have all had that moment where we have lost the tin opener. No matter which drawer you open, it does not seem to be there. This surprisingly simple technique shows how you can open a can of food without an opener.

It’s dead easy, and requires just by rubbing the can on a concrete surface. It works by apparently abrading the lip where the lid of the can has been sealed shut.

One word of warning, it is probably not one to try if you are if it’s a can of soup!