The hardest food in the world is as hard as a wooden knife. You have to cut it into sawdust with a plane before you can eat it.

When it comes to very hard food, you can probably think of baguettes, compressed biscuits and other things, which are recognized as chewy and hard foods. But for the world's hardest food in the Guinness Book of Records, they are not enough. This so-called hardest food is actually a kind of dried fish, which is made of a kind of tuna. After a variety of complex steps, it becomes harder than wood and cannot be cut with a kitchen knife. This kind of food should be processed with the kind of plane used by carpenters and cut into "sawdust" before eating. In fact, many people have eaten this kind of food, but many people don't know it.

When people eat octopus balls, a layer of firewood fillet sprinkled on it is actually the dried meat of this kind of fish. This kind of dried fish is called "bonito Festival". It is made of skipjack fish. Skipjack fish is a kind of tuna with high output and low price. It is produced in the South China Sea and East China Sea, and there are also a large number of fish schools in the waters of Japan. It was first invented by the Japanese to use skipjack to make dried fish. In the Edo period, a fisherman came up with a way to prevent too much skipjack from deteriorating, that is, to make it into super-hard dried fish.

The practice of dried fish is completely different from that of dried fish in our country. Chinese fishermen usually take two steps to make dried fish, pickled with salt and then dried in the sun. On the other hand, the Japanese practice is much more complicated, first turning the fish fillets into long strips, then cooking and peeling them, and then burning the wood to smoke and dry the water on the fish. after this process, the bonito festival is still a semi-finished product, and the follow-up steps are the real essence. After smoking, put the semi-finished product in a wet place to cover it with mold, then dry it in the sun, and then cut off the mold. Repeat this step 3-5 times and the bonito festival will be done.

With such complex steps to make dried fish, you can imagine how hard it is. Each processing process makes the skipjack fish have less moisture. After the production is finished, the dried fish is like a piece of dead wood, light and hard. As a result, this kind of dried fish can only be cut with a special plane, just like the planing wood used by carpenters in our country. the fish is like sawdust, which is generally used to cook soup and can be eaten directly on top of food. Although it is very hard, but its taste is unparalleled, all kinds of Japanese delicacies are inseparable from it, such as ramen soup, sushi, hot pot soup have delicious bonito festival.

The production of skipjack fish in China is also very high, but the processing method is not as fine as the Japanese. At present, most of the skipjack fish caught by fishermen are canned or exported to Japan.