Japanese Fish Knife: Yes, this hard fish is sharpened into a knife!

It was Mr. Miyagi in the tatami room with the fish knife!

No, but seriously though, Japanese Fish Knife is not just a great name for a garage band, it’s a real thing.

Katsuobushi 鰹節 is dried, fermented, smoked Japanese bonito tuna. It is widely considered to be the world’s hardest food.

Japanese Fish Knife: Yes, this hard fish is sharpened into a knife!

 

The dried fish looks like a piece of wood, which can be sharpened down into a knife.

That knife can be used to expertly fillet a fugu for Homer Simpson.

Japanese Fish Knife: Yes, this hard fish is sharpened into a knife!

 

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