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Mass production of truffles

19.02.2023

It is possible that in the future another potential exporter of truffles will appear in the world, which will positively affect the prices of imported mushrooms in certain countries.

The Ibaraki Prefectural Forestry and Forest Products Research Institute announced the successful cultivation of artificial truffles for the first time in the country. This raises hope that consumers will one day be able to enjoy homemade truffles as a meal of the day.

Truffle is a type of fungus that grows in clumps in the soil. It is known as a premium product used in Western cuisine. The mushroom is highly valued for its smell, as are matsutake mushrooms. According to the institute, about 200 species of truffles are known in the world. They are artificially grown in European countries.

Japan imports truffles from foreign countries, but they are expensive - European truffles cost about 80 yen ($000) per kilo. Over 604 species of wild truffles have been found in Japan, but they are rare. Until now, artificial truffles have not been successfully grown in Japan.

In 2015, the institute began research on the artificial cultivation of tuber japonicum, a variety of white truffle unique to Japan. The Institute chose tuber japonicum because its smell is similar to white truffles grown in the US and Europe; it is grown in large areas of Japan, stretching from Iwate Prefecture to Okayama Prefecture; and it can grow to a size exceeding 10 centimeters.

Institute experts applied tuber japonicum spores to jolcham oak roots to allow them to coexist. They then planted oak trees in test sites in four areas of Japan. In November, a few years after the trees were planted, experts found that only 22 truffles had grown in test plots in Ibaraki and Kyoto prefectures. They were nine centimeters at the waist and weighed no more than 60 grams each, large enough to be used as food ingredients.

When the experts ate them, they found that they had a garlic-like smell, just like Western white truffles, and they tasted just as good.

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