This Dutch knifemaker from near Eindhoven demonstrates how this incredibly sharp blade can seamlessly slice a grape.<br /><br />Footage from January 14 shows the rectangular Nakiri knife take off layers of the grape with ease over and over again.<br /><br />The filmer said: "The knife is made of San Mai steel and has a handle made of old skateboards."<br /><br />Nakiri knives are traditionally used for vegetables in Japan.