Transform a Japanese Fish into a Knife

We have all heard the saying, “Give a man a fish and you feed him for a day; teach a man to fish and you feed him for a lifetime.” What the saying doesn’t explain is that the man is fed for a lifetime because he’s able to turn those fish into knives and start a fishy knife business. Dried bonito, or katsuobushi, is considered the hardest food in the world and apparently has many useful applications as food, a hammer, and a knife. To get to this hardened state requires weeks of drying the fish out and fermentation. However, once it does you’ll have a great multi-purpose tool. The YouTube channel kiwami japan even shows you the process of how to turn this dried fish into a knife that cuts. That's right, this knife can cut paper and puncture aluminum cans. The video may only be about 10 minutes, but you can tell that it takes a lot of time and effort to get that blade. What’s your favorite multi-purpose tool?

カツオ節は世界一硬い食べ物としてギネスブックに載っているそうです。

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