Start by taking a full tin can. Using a tin opener, begin removing the lid, but stop when the lid is just over halfway off. Carefully bend the lid out using a knife and empty the contents.

Strangely enough, canned food has been around a bit longer than can openers. So, how did people crack open cans years before ...

This Bully Beef can opener dates back to the First World War when soldiers fighting in the trenches in France would have used the device to open tins of food. It's a hard-wearing object and is ...