He makes 4 cuts on a piece of wood: this AWESOME trick will surprise you!

What you see in the video is the process of creating the so-called "Swedish torch." This method to light the fire was in fact used by Swedish soldiers already in the mid-1600s to warm the long nights in inhospitable territories. This method, while using a single piece of wood, allows you to have a flame for an incredible amount of time; what's more, on a flat surface you can heat food or even do some cooking.