It's not tough to figure out how to use a whisk or spatula, after all. But what about a can opener? Turns out, there's a right way and a wrong way to open cans! I can easily say that every time I ...

The first can opener was a blade that sawed around the can's edge, leaving a jagged rim. U.S. Pat. No. 19063 How did the first tin cans get opened? A chisel and a hammer, writes Kaleigh Rogers for ...